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TCVN 5346-1991 Safety requirements boilers General requirements for calculation stability《锅炉安全要求 稳定性计算的一般要求》.pdf 10

TCVN 5346-1991 Safety requirements boilers General requirements for calculation stability《锅炉安全要求 稳定性计算的一般要求》.pdfTCVN 5346-1991 Safety requirements boilers General requirements for calculation stability《锅炉安全要求 稳定性计算的一般要求》.pdf

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TCVN 5345-1991 Steel Metallographic method for the determination of microstructure of sheets and bands of unalloyed structural steels《钢 非合金结构钢钢板和钢带显微结构的测定方法》.pdf 15

TCVN 5345-1991 Steel Metallographic method for the determination of microstructure of sheets and bands of unalloyed structural steels《钢 非合金结构钢钢板和钢带显微结构的测定方法》.pdfTCVN 5345-1991 Steel Metallographic method for the determination of microstructure of sheets and bands of unalloyed structural steels《钢 非合金结构钢钢板和钢带显微结构的测定方法》.pdf

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TCVN 4946-1989 Pneumatic system for mechanical engineering Pneumatic drives General test methods《机械工程的气动系统 气动驱动 一般试验方法》.pdf 9

TCVN 4946-1989 Pneumatic system for mechanical engineering Pneumatic drives General test methods《机械工程的气动系统 气动驱动 一般试验方法》.pdfTCVN 4946-1989 Pneumatic system for mechanical engineering Pneumatic drives General test methods《机械工程的气动系统 气动驱动 一般试验方法》.pdf

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TCVN 4945-2008 Industrial valves Pressure testing of valves《工业阀门 阀门的压力试验》.pdf 8

TCVN 4945-2008 Industrial valves Pressure testing of valves《工业阀门 阀门的压力试验》.pdfTCVN 4945-2008 Industrial valves Pressure testing of valves《工业阀门 阀门的压力试验》.pdf

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TCVN 4944-1989 Hydraulic drives General test methods《液压驱动 一般试验方法》.pdf 7

TCVN 4944-1989 Hydraulic drives General test methods《液压驱动 一般试验方法》.pdfTCVN 4944-1989 Hydraulic drives General test methods《液压驱动 一般试验方法》.pdf

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TCVN 4943-1989 Machine tools Direction of operation of control《机床 控制运行方向》.pdf 6

TCVN 4943-1989 Machine tools Direction of operation of control《机床 控制运行方向》.pdfTCVN 4943-1989 Machine tools Direction of operation of control《机床 控制运行方向》.pdf

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TCVN 4942-1989 Metal cutting machines Methods for control of running belance of model product《金属切削机 典型产品运转平衡的控制方法》.pdf 6

TCVN 4942-1989 Metal cutting machines Methods for control of running belance of model product《金属切削机 典型产品运转平衡的控制方法》.pdfTCVN 4942-1989 Metal cutting machines Methods for control of running belance of model product《金属切削机 典型产品运转平衡的控制方法》.pdf

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TCVN 4428-1987 Sandstone Method for determination of silicon dioxide content《砂岩 二氧化硅含量的测定方法》.pdf 6

TCVN 4428-1987 Sandstone Method for determination of silicon dioxide content《砂岩 二氧化硅含量的测定方法》.pdfTCVN 4428-1987 Sandstone Method for determination of silicon dioxide content《砂岩 二氧化硅含量的测定方法》.pdf

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TCVN 4427-1987 Sandstone Method for the determination of iron oxide content《砂岩 氧化铁含量的测定方法》.pdf 7

TCVN 4427-1987 Sandstone Method for the determination of iron oxide content《砂岩 氧化铁含量的测定方法》.pdfTCVN 4427-1987 Sandstone Method for the determination of iron oxide content《砂岩 氧化铁含量的测定方法》.pdf

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TCVN 4426-1987 Sandstone Method for the determination of total rare-earth elements and thorium oxide contents《砂岩 稀土元素和氧化钍总含量的测定方法》.pdf 10

TCVN 4426-1987 Sandstone Method for the determination of total rare-earth elements and thorium oxide contents《砂岩 稀土元素和氧化钍总含量的测定方法》.pdfTCVN 4426-1987 Sandstone Method for the determination of total rare-earth elements and thorium oxide contents《砂岩 稀土元素和氧化钍总含量的测定方法》.pdf

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