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54617 ASTM A485-09 Standard Specification for High Hardenability Antifriction Bearing
技术  •  leunghb  •  2010-01-09 07:29
42818 浅谈ATMEGA48单片机的仪表步进电机的细分控制原理及应用
技术  •  仪器仪表网  •  2012-12-13 09:46
56903 ASTM A488/A488M-09 Standard Practice for Steel Castings, Welding, Qualifications
技术  •  leunghb  •  2010-01-09 07:57
54718 ASTM A484/A484M-09 Standard Specification for General Requirements for Stainless
技术  •  leunghb  •  2010-01-09 07:19
45494 ASTM A487/A487M-93(2007) Standard Specification for Steel Castings Suitable
技术  •  leunghb  •  2010-01-07 11:41
25560 ASTM A483-04 Standard Specification for Silicomanganese
技术  •  leunghb  •  2010-01-05 10:52
36750 ASTM A482-05 Standard Specification for Ferrochrome-Silicon
技术  •  leunghb  •  2010-01-05 09:28
41540 ASTM A481-05 Standard Specification for Chromium Metal
技术  •  leunghb  •  2010-01-05 09:19
21962 ASTM A48/A48M-03(2008) Standard Specification for Gray Iron Castings
技术  •  leunghb  •  2009-11-12 03:29

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