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1. 发明专利

JP2011214153A Method for producing grain-oriented electromagnetic steel sheet 有权
标题翻译：生产面向导电电磁钢板的方法
公开(公告)号：JP2011214153A
公开(公告)日：2011-10-27
申请号：JP2011120810
申请日：2011-05-30
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： KUMANO TOMOJI , USHIGAMI YOSHIYUKI , NAKAMURA SHUICHI , ZAIZEN YOICHI
IPC分类号： C21D8/12 , C22C38/00 , C22C38/60 , H01F1/16
CPC分类号： H01F1/16 , C21D6/008 , C21D8/1222 , C21D8/1233 , C21D8/1272 , C21D8/1283 , C22C38/001 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/14 , C23C8/24 , C23C8/26 , C23C8/80 , F27B9/28 , F27B9/30
摘要： PROBLEM TO BE SOLVED: To provide a method for production of a grain-oriented electromagnetic steel sheet stably obtainable of good magnetic characteristic.SOLUTION: The method for producing the steel sheet includes: heating a slab with a predetermined composition at 1,280-1,390°C to make a substance functioning as an inhibitor to be solid-solved (step S1); obtaining a steel strip by hot-rolling the slab (step S2); annealing the steel strip to form a primary inhibitor in the steel strip (step S3); cold-rolling the steel strip once or more (step S4); annealing the steel strip to perform decarburization and to cause primary recrystallization (step S5); performing a nitriding treatment on the steel strip in a mixed gas of hydrogen, nitrogen and ammonia in such a state that the steel strip runs to form a secondary inhibitor in the steel strip (step S6); and annealing the steel strip to induce secondary recrystallization (step S7).
摘要翻译：要解决的问题：提供一种稳定地具有良好磁特性的晶粒取向电磁钢板的制造方法。解决方案：钢板的制造方法包括：在1,280-1,390℃加热具有预定组成的板坯使作为固体抑制剂的物质起作用（步骤S1）; 通过热轧板坯获得钢带（步骤S2）; 对钢带退火以在钢带中形成初级抑制剂（步骤S3）; 对钢带进行一次或多次冷轧（步骤S4）; 对钢带进行退火以进行脱碳并引起一次再结晶（步骤S5）; 在钢带运行状态下在钢带中形成二次抑制剂的状态下，在氢气，氮气和氨的混合气体中对钢带进行氮化处理（步骤S6）; 并退火钢带以引起二次再结晶（步骤S7）。

2. 发明专利

JP2011005531A Flux-cored welding wire for high-tensile steel and method for manufacturing the same 有权
标题翻译：用于高拉力钢的熔丝焊丝及其制造方法
公开(公告)号：JP2011005531A
公开(公告)日：2011-01-13
申请号：JP2009152956
申请日：2009-06-26
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： NAKAMURA SHUICHI , HASEGAWA TOSHINAGA , SHIMURA RYUICHI
IPC分类号： B23K35/368 , B23K35/30 , B23K35/40
摘要： PROBLEM TO BE SOLVED: To provide a flux-cored welding wire for high-tensile steel which can be generally used even for high-tensile steel having the tensile strength of ≥950 MPa, and a method for manufacturing the flux-cored welding wire.SOLUTION: The flux-cored wire includes a steel shell and flux which contains at least metal or alloy and is filled in the steel shell. The flux-cored wire contains, by mass to the total mass of the wire, 0.04-0.30% C, 0.2-2.0% Si, 0.3-2.5% Mn, ≤0.02% P, ≤0.02% S, 0.002-0.05% Al, 1.0-12% Ni, 0.01-2.0% Mg, and the balance iron with inevitable impurities, wherein the carbon equivalent (Ceq) is 0.25-1.2%, the average particle size of the flux to be filled in the flux-cored wire is 30-300 μm, and the steel shell has no slit-like joint with the risk of ingress of outside air.
摘要翻译：要解决的问题：提供一种通常用于高拉伸强度≥950MPa的高张力钢的高强度钢的药芯焊丝，以及用于制造药芯焊丝的方法。解决方案：药芯焊丝包括钢壳和至少含有金属或合金并填充在钢壳中的焊剂。药芯焊丝的质量相对于焊丝的总质量为0.04-0.30％C，0.2-2.0％Si，0.3-2.5％Mn，≤0.02％P，≤0.02％S，0.002-0.05％Al ，1.0-12％Ni，0.01-2.0％Mg，剩余铁与不可避免的杂质，其中碳当量（Ceq）为0.25-1.2％，待填充在药芯焊丝中的焊剂的平均粒径为30-300μm，钢壳不具有狭缝状接头，具有外部空气进入的风险。

3. 发明专利

JP2009248175A Tig welding method of high-strength steel using flux-containing wire 有权
标题翻译：使用含有电线的高强度钢的TIG焊接方法
公开(公告)号：JP2009248175A
公开(公告)日：2009-10-29
申请号：JP2008102482
申请日：2008-04-10
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： NAKAMURA SHUICHI , HASEGAWA TOSHINAGA , OMURA DAISUKE
IPC分类号： B23K35/368 , B23K9/167 , B23K9/23 , B23K35/02 , B23K35/30
摘要： PROBLEM TO BE SOLVED: To provide a TIG welding method of high-strength steel by using a flux-containing wire, the method capable of advantageously solving the problem of a decrease of tensile strength and toughness of a welding metal due to unevenness of a component in the welding metal.
SOLUTION: The flux wire has a steel-made outer skin having a cross sectional thickness of 0.30 to 1.0 mm; contains 0.04 to 0.4% (by mass% based on the whole mass of the wire) of C, 0.2 to 2.0% of Si, 0.3 to 2.0% of Mn and 0.002 to 0.05% of Al, and further contains one or two or more of 0.1 to 12% of Ni, 0.01 to 4.0% of Cr, 0.1 to 4.0% of Mo, 0.1 to 4.0% of W and 0.01 to 1.5% of Cu, the remaining components being iron and an inevitable impurity; and satisfies that a carbon equivalent is 0.40 to 1.5%, and that a difference of the carbon equivalent between the whole wire and the steel-made outer skin is not less than 0.10%. The TIG welding is conducted by using the flux and inputting welding heat of 1.70 to 4.0 kJ/cm×g per g of welding wire.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了通过使用含焊丝提供高强度钢的TIG焊接方法，该方法能够有利地解决由于不均匀性导致的焊接金属的拉伸强度和韧性降低的问题的焊接金属中的部件。解决方案：磁通线具有横截面厚度为0.30至1.0mm的钢制外皮; 含有C：0.03〜2.0％，Mn：0.3〜2.0％，Al：0.002〜0.05％的0.04〜0.4质量％（以质量计的质量％），进一步含有1种或2种以上 0.1〜12％的Ni，0.01〜4.0％的Cr，0.1〜4.0％的Mo，0.1〜4.0％的W和0.01〜1.5％的Cu，其余成分为铁和不可避免的杂质; 并且满足碳当量为0.40〜1.5％，全线和钢制外皮之间的碳当量的差不小于0.10％。使用焊剂进行TIG焊接，并输入每克焊丝1.70〜4.0 kJ / cm×g的焊接热量。版权所有（C）2010，JPO＆INPIT

4. 发明专利

JP2008063655A Method for producing grain oriented silicon steel sheet capable of stably obtaining magnetic property in sheet width direction 有权
标题翻译：用于生产厚度方向的稳定获得磁性材料的面向导向的硅钢板的方法
公开(公告)号：JP2008063655A
公开(公告)日：2008-03-21
申请号：JP2007055753
申请日：2007-03-06
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MORISHIGE NORISATO , MURAKAMI KENICHI , NAKAMURA SHUICHI , HONMA HODAKA
IPC分类号： C21D8/12 , C21D9/46 , C22C38/00 , C22C38/16 , C22C38/60 , H01F1/16
摘要： PROBLEM TO BE SOLVED: To provide a method where grain oriented silicon steel sheet having high magnetic flux density can be stably produced by uniformizing inhibitor strength in the sheet width direction upon secondary recrystallization annealing. SOLUTION: When a grain oriented silicon steel sheet is produced through a series of stages from a slab having a composition comprising, by mass, ≤0.10% C, 2.5 to 7.0% Si, 0.01 to 0.30% Mn, 0.01 to 0.40% Cu, 0.001 to 0.050% S, 0.005 to 0.060% acid soluble Al and 0.002 to 0.015% N, and the balance Fe with inevitable impurities, the steel sheet temperature in the range from 10 to 30 mm by the distance from the edge in the sheet width direction on the outlet side of finish rolling in a hot rolling stage is controlled to 900 to 1,100°C, also, hot rolled sheet annealing is performed in a two step heat treatment cycle, the steel sheet temperature in the primary soaking is controlled to 1,000 to 1,150°C, further, the steel sheet temperature in the secondary soaking is controlled to 850 to 950°C, and the holding time in the secondary soaking temperature is controlled to 10 to 300 s. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种通过二次再结晶退火使片宽度方向上的抑制强度均匀化可以稳定地制造具有高磁通密度的晶粒取向硅钢板的方法。解决方案：当晶粒取向硅钢板从具有质量≤0.10％C，2.5〜7.0％Si，0.01〜0.30％Mn，0.01〜0.40质量％％Cu，0.001〜0.050％S，0.005〜0.060％酸溶性Al和0.002〜0.015％N，余量为Fe与不可避免的杂质，钢板温度在10〜30mm的范围内与边缘的距离在热轧阶段的精轧出口侧的板宽度方向控制在900〜1100℃，在两步热处理循环中进行热轧板退火，初次均热中的钢板温度为控制在1000〜1150℃，另外将二次均热中的钢板温度控制在850〜950℃，将二次均热温度的保持时间控制在10〜300秒。版权所有（C）2008，JPO＆INPIT

5. 发明专利

JP2008001982A Process for producing grain-oriented magnetic steel sheet with high magnetic flux density 有权
标题翻译：生产具有高磁通密度的晶粒磁性钢板的工艺
公开(公告)号：JP2008001982A
公开(公告)日：2008-01-10
申请号：JP2007129649
申请日：2007-05-15
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： USHIGAMI YOSHIYUKI , FUJII NOBUNORI , NAKAMURA SHUICHI
IPC分类号： C21D8/12 , B21B3/02 , C21D9/46 , C22C38/00 , C22C38/06 , C22C38/60 , H01F1/16
CPC分类号： Y02P10/212
摘要： PROBLEM TO BE SOLVED: To reduce the rapid heating region in the heating step in decarburization/annealing to the temperature at which induction heating can be used in the production of a grain-oriented magnetic steel sheet. SOLUTION: When a silicon steel stock is heated at a temperature of 1,280°C or lower and is thereafter hot-rolled, the hot-rolled sheet is annealed and is then cold-rolled, so as to be a steel sheet with a final sheet thickness, and the steel sheet is subjected to decarburization/annealing, is thereafter nitrided, is coated with a separation agent for annealing and is subjected to finish annealing, so as to produce a grain-oriented magnetic steel sheet, in the hot rolled sheet annealing, the steel sheet is decarburized by 0.002 to 0.02%, thus the lamellar spacing in the surface grain structure after the annealing is controlled to ≥20 μm, and further, the heating in the heating step in the decarburization/annealing for the steel sheet is conducted under such conditions that the heating rate during the period when the temperature of the steel sheet is in the range of 550 to 720°C is 40°C/sec or higher, preferably 75 to 125°C/sec. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了将脱碳/退火的加热工序中的快速加热区域减少到在取向电磁钢板的制造中可以使用感应加热的温度。解决方案：当将硅钢坯料在1,280℃以下的温度下加热后，进行热轧后，对该热轧板进行退火，然后进行冷轧，成为具有最终的板厚，钢板进行脱碳/退火，然后氮化，涂覆有退火分离剂，并进行最终退火，制成晶粒取向的电磁钢板，在热的轧制板退火时，钢板脱碳0.002〜0.02％，退火后的表面晶粒结构中的层状间隔被控制为≥20μm以下，进一步，在脱碳/退火中的加热工序中的加热在钢板的温度在550〜720℃的范围内的加热速度为40℃/秒以上，优选为75〜125℃/秒的条件下进行钢板的制造。版权所有（C）2008，JPO＆INPIT

6. 发明专利

JP2007314823A Method for producing grain oriented silicon steel sheet having high magnetic flux density 有权
标题翻译：用于生产具有高磁通密度的颗粒导向硅钢板的方法
公开(公告)号：JP2007314823A
公开(公告)日：2007-12-06
申请号：JP2006143858
申请日：2006-05-24
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： USHIGAMI YOSHIYUKI , FUJII NOBUNORI , NAKAMURA SHUICHI , ITO TOMOAKI
IPC分类号： C21D9/46 , C22C38/00 , C22C38/06 , C22C38/60 , H01F1/16
摘要： PROBLEM TO BE SOLVED: To provide a method capable of increasing the ratio of presence of ä4 1 1} orientation grains in a primary recrystallization grain structure after the decarburization annealing by using a regular facility in manufacturing a grain oriented silicon steel sheet. SOLUTION: In the method for manufacturing a grain oriented silicon steel sheet, a silicon steel stock is heated at the temperature of ≤1,280°C, and hot-rolled; a hot-rolled plate is annealed, and subjected to the cold rolling to form a steel sheet of the final thickness; the steel sheet is subjected to decarburization annealing, and further nitriding, and an annealing separating agent is coated to perform the finish annealing. The hot-rolled plate is annealed in a process in which the hot-rolled plate is heated to a predetermined temperature of 1,000-1,150°C, subjected to recrystallization, and annealed at the lower temperature of 850-1,100°C. The lamellar spacing is controlled to be ≥20 μm in the grain structure after the annealing. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：待解决的问题：提供一种能够通过在制造晶粒取向硅钢板中使用常规设备来提高脱碳退火之后的一次再结晶晶粒结构中存在ä41 1}取向晶粒的比例的方法。解决方案：在晶粒取向硅钢板的制造方法中，将硅钢坯料加热至温度≤1,280℃，进行热轧; 对热轧板进行退火，进行冷轧，形成最终厚度的钢板; 对钢板进行脱碳退火，进一步渗氮，并进行退火分离剂进行最终退火。在将热轧板加热到1000〜1.50℃的规定温度的过程中，对该热轧板进行退火，进行再结晶，在850〜1100℃的温度下进行退火。退火后的晶粒结构中的层间距控制在≥20μm。版权所有（C）2008，JPO＆INPIT

7. 发明专利

JP2007031793A Method for manufacturing electromagnetic steel sheet 有权
标题翻译：制造电磁钢板的方法
公开(公告)号：JP2007031793A
公开(公告)日：2007-02-08
申请号：JP2005218811
申请日：2005-07-28
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MURAKAMI HIDEKUNI , NAKAMURA SHUICHI
IPC分类号： C21D9/46 , C21D8/12 , C22C38/00 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a method for stably manufacturing an electromagnetic steel sheet having magnetic properties equal to or more excellent than those of a normal grain-oriented electromagnetic steel sheet or a non-oriented electromagnetic steel sheet, by using an intermetallic compound as an inhibitor and making the electromagnetic steel sheet cause secondary recrystallization therein.
SOLUTION: A steel slab for the steel sheet comprises 0.0800% or less C, 0.30% or less P, 0.020% or less S, 0.0400% or less N, one or more such elements as to form an intermetallic compound, 70% or more Fe and the balance unavoidable impurities. The method for manufacturing the grain-oriented electromagnetic steel sheet comprises a series of the steps of: hot-rolling the steel slab; subsequently annealing the hot-rolled plate as needed; subsequently cold-rolling the plate once, or twice or more while sandwiching an intermediate annealing step; subsequently recrystallization-annealing it; and then finish-annealing it with or without applying a separation agent for annealing. The manufacturing method also includes using the intermetallic compound existing in the steel before and after secondary recrystallization occurs in the finish annealing step, as the inhibitor, to control the progress of the secondary recrystallization. The intermetallic compound is formed in the heat treatment step after the cold rolling step and before the secondary recrystallization occurs.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种稳定地制造具有等于或优于普通晶粒取向电磁钢板或非取向电磁钢板的磁特性的电磁钢板的方法，通过使用金属间化合物作为抑制剂，并使电磁钢板在其中引起二次再结晶。钢板的钢板包括0.0800％以下的C，0.30％以下的P，0.020％以下的S，0.0400％以下的N，一种或多种这样的元素，形成金属间化合物，70 Fe％以上，余量不可避免的杂质。晶粒取向电磁钢板的制造方法包括：对钢板进行热轧的一系列步骤; 随后根据需要退火热轧板; 随后在夹持中间退火步骤的同时将板冷轧一次或两次或更多次; 随后重结晶退火; 然后用或不涂覆退火分离剂对其进行最终退火。制造方法还包括在最终退火步骤中，在二次再结晶发生前后的钢中存在的金属间化合物作为抑制剂，以控制二次再结晶的进行。在冷轧工序之后的二次再结晶发生的热处理工序中形成金属间化合物。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2004204336A Method for manufacturing high magnetic flux density grain-oriented electromagnetic steel sheet 有权
公开(公告)号：JP2004204336A
公开(公告)日：2004-07-22
申请号：JP2002377888
申请日：2002-12-26
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： USHIGAMI YOSHIYUKI , NAKAMURA SHUICHI , FUJII NOBUNORI , OKADA SHINGO
IPC分类号： C21D8/12 , C22C38/00 , C22C38/06 , C22C38/60
CPC分类号： Y02P10/212
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing technology of an industrially consistent grain-oriented electromagnetic steel sheet of excellent magnetic characteristic by eliminating secondary re-crystallization instability attributable to primary re-crystallization in a method for manufacturing the monodirectivity magnetic steel sheet by low-temperature slab heating. SOLUTION: The quantity of sulfide affecting the primary re-crystallization structure is controlled by controlling the cooling rate of a silicon steel slab and the slab heating rate according to the Mn quantity. More specifically, the cooling rate from 1,300°C to 1,100°C after forming the slab is set to be ≤ 1°C/sec, and the slab heating temperature is controlled in a range of an inequality (1) of T(°C) ≤ 250 × log äMn(%)} + 1,440 (1) to the Mn content of the steel plate. COPYRIGHT: (C)2004,JPO&NCIPI

9. 发明专利

JP2003041320A Method for manufacturing grain-oriented electromagnetic steel sheet with mirror surface superior in core loss 有权
标题翻译：用于在核心损失中用镜面表面超级制造面向导向的电磁钢板的方法
公开(公告)号：JP2003041320A
公开(公告)日：2003-02-13
申请号：JP2001310357
申请日：2001-10-05
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MURAKAMI KENICHI , FUJII HIROYASU , FUJII NOBUNORI , USHIGAMI YOSHIYUKI , NAKAMURA SHUICHI , YAMAMOTO NORIHIRO
IPC分类号： C21D8/12 , C22C38/00 , C22C38/06 , H01F1/16
摘要： PROBLEM TO BE SOLVED: To provide a means for manufacturing a grain-oriented electromagnetic steel sheet with mirror surface, superior in magnetic properties and surface smoothness, while adequately decarburizing the steel material in a decarburization annealing step. SOLUTION: The method for manufacturing the grain-oriented electromagnetic steel sheet with the mirror surface superior in core loss, comprising cold rolling a hot-rolled silicon steel sheet, which includes, by mass%, 2.0-4.0% Si, 0.01-0.05% acid- soluble Al, 0.01% or less N, 0.3% or less Mn, 0.05% or less S, and the balance substantially Fe with unavoidable impurities, once or more times while sandwiching intermediate annealing, into a final sheet thickness, and employing alumina as a main component in an annealing separating agent between the sheets, when laminating the steel sheets after decarburization annealing, to make the surface to be a mirror plane after finish- annealing, is characterized by separating the decarburization annealing process into the former step and the latter step, and performing the annealing in such oxidation degree (PH2 O/PH2 ) ranges of the former step P1 and the latter step P2, as to satisfy expressions of: 0.05
摘要翻译：要解决的问题：提供一种用于制造具有镜面，磁特性和表面光滑度优异的晶粒取向电磁钢板的方法，同时在脱碳退火步骤中对钢材进行充分脱碳。解决方案：制造具有优异的铁芯损耗的镜面的晶粒取向电磁钢板的制造方法，其特征在于，将热轧硅钢板进行冷轧，所述热轧硅钢板以质量％计含有2.0〜4.0％的Si，0.01-0.05％酸溶性Al，0.01％以下的N，0.3％以下的Mn，0.05％以下的S，余量基本为Fe，不可避免的杂质，一次或多次夹持中间退火，成为最终的板厚，并使用氧化铝作为片材之间的退火分离剂的主要成分，在脱碳退火后层压钢板时，在退火后使表面成为镜面的特征在于，将脱碳退火处理分离成前一工序，后处理，并进行前一步骤P1和后一步骤P2的氧化度（PH2O / PH2）范围的退火，以满足表达式：0.05 <= P1 <= 0.2，P2 <= P1-0.03。

10. 发明专利

JP2011255385A Flux-cored wire for carbon dioxide gas-shielded arc welding for high-tensile steel 有权
标题翻译：二氧化碳气体保护焊丝用于高强度钢的焊丝
公开(公告)号：JP2011255385A
公开(公告)日：2011-12-22
申请号：JP2010129231
申请日：2010-06-04
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： NAKAMURA SHUICHI , KOJIMA KAZUHIRO , TOTSUKA YASUJI , SHIMURA RYUICHI
IPC分类号： B23K35/368 , B23K35/30
摘要： PROBLEM TO BE SOLVED: To provide a flux-cored wire for carbon dioxide gas-shielded arc welding for a high-tensile steel, used for welding a high-tensile steel having ≥690 MPa of strength using 100% carbon dioxide gas as a shielding gas, obtaining superior welding workability and obtaining a weld metal having excellent mechanical capability.SOLUTION: The wire contains, by mass% to the total mass of the wire, 0.03-0.10% C, 0.1-0.4% Si, 2.0-4.0% Mn, 1.0-3.5% Ni, 0.06-1.5% Al, 0.10-1.00% Mo, contains one or more kinds of 0.1-1.0% Cr, 0.01-0.05% Nb and 0.01-0.05 V, and contains 2.5-7.5% TiO, 0.1-0.5% SiO, 0.2-0.9% ZrO, 0.1-0.4% AlOand 0.01-0.4% one or more kinds of fluorine compound in total in terms of F value. In the wire, the total hydrogen amount of the wire is ≤15 ppm by mass ratio to the entire wire.
摘要翻译：要解决的问题：为了提供用于高张力钢的二氧化碳气体保护电弧焊的药芯焊丝，用于使用100％二氧化碳气体焊接具有≥690MPa强度的高强度钢作为保护气体，获得优异的焊接加工性，并获得具有优异的机械性能的焊接金属。解决方案：电线的质量％以质量％计含有0.03-0.10％C，0.1-0.4％Si，2.0-4.0％Mn，1.0-3.5％Ni，0.06-1.5％Al， 0.10-1.00％Mo，含有0.1-1.0％的Cr，0.01-0.05％的Nb和0.01-0.05V的一种或多种，并含有2.5-7.5％的TiO 2 SB SB =“POST”> 2 0.1-0.5％SiO 2 ，0.2-0.9％ZrO 2 ，0.1-0.4％Al 2 O 3 和0.01-0.4％的氟化合物总计为F值。在导线中，导线的总氢量相对于整个导线的质量比为≤15ppm。版权所有（C）2012，JPO＆INPIT

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