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预览 [电子书] Impact of heat pump load on distribution networks attachment jodie 2015-5-12 01790 jodie 2015-5-12 08:47
预览 [电子书] Circulating Water Pump Upgrade at Astoria. attachment jodie 2015-5-11 01874 jodie 2015-5-11 09:01
预览 [电子书] Effect of Endobronchial Valve Therapy on attachment jodie 2015-5-8 01951 jodie 2015-5-8 08:56
预览 [标准] 调节阀修理+阀门锻造工艺+套筒调节阀设计+球阀英标+球阀阀座+阀门结构长度标准 attachment aurthur 2015-5-7 02038 aurthur 2015-5-7 11:35
预览 [标准] 阀门企业成本控制+平板闸阀设计+提升阀门寿命+阀门工艺+球阀加工+双偏心球阀设计 attachment aurthur 2015-5-7 01777 aurthur 2015-5-7 11:33
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预览 [标准] 阀门行业国家标准(一) jodie 2015-5-6 01744 jodie 2015-5-6 08:46
预览 [电子书] Clinical value.pdf attachment jodie 2015-5-4 02246 jodie 2015-5-4 09:12
预览 [电子书] 废弃钻井泥浆固化处理技术研究.pdf attachment jodie 2015-4-27 02852 jodie 2015-4-27 09:58
预览 [电子书] 气动泥浆脱气器工作原理及优点.p ... attachment jodie 2015-4-24 02021 jodie 2015-4-24 09:01
预览 [电子书] 工程用陶瓷油隔离泥浆泵设计.pdf attachment jodie 2015-4-23 02197 jodie 2015-4-23 09:03
预览 [标准] PN2500超高压阀门和管件 力学性能 attach_img jodie 2015-4-22 01916 jodie 2015-4-22 08:52
预览 [标准] 大口径球阀技术+核电系统阀门+三通球阀设计 attachment aurthur 2015-4-20 01675 aurthur 2015-4-20 21:57
预览 [标准] 锻钢调节阀设计+设计院阀门型号编制+止回阀设计 attachment aurthur 2015-4-20 02490 aurthur 2015-4-20 21:52
预览 [标准] 金属材料知识+控制阀设计+API600+管线球阀技术 attachment aurthur 2015-4-20 02062 aurthur 2015-4-20 21:50
预览 [电子书] Clinical value.pdf attachment jodie 2015-4-20 01658 jodie 2015-4-20 09:17
预览 [电子书] 气动泥浆脱气器工作原理及优点. attachment jodie 2015-4-17 02134 jodie 2015-4-17 08:59
预览 [电子书] HEAT TRANSFER ON GROOVED HIGH DENSITY POLY ETHYLENETUBE FOR ```` attachment jodie 2015-4-16 01763 jodie 2015-4-16 08:51
预览 [标准] Magnetically DrivenPumps An overview attachment jodie 2015-4-15 02115 jodie 2015-4-15 09:04
预览 [电子书] Ground sourse heat pumps in taxas School District attachment jodie 2015-4-14 01995 jodie 2015-4-14 08:38
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