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TCVN 3255-1986 Explosion safety General specifications《爆炸安全 一般规范》.pdf 7

TCVN 3255-1986 Explosion safety General specifications《爆炸安全 一般规范》.pdfTCVN 3255-1986 Explosion safety General specifications《爆炸安全 一般规范》.pdf

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TCVN 3254-1989 Fire protection General safety requirements《防火 一般安全要求》.pdf 20

TCVN 3254-1989 Fire protection General safety requirements《防火 一般安全要求》.pdfTCVN 3254-1989 Fire protection General safety requirements《防火 一般安全要求》.pdf

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TCVN 3245-1979 Febrine disease of Chinese silkwiren《中国丝绸线的Febrine疾病》.pdf 7

TCVN 3245-1979 Febrine disease of Chinese silkwiren《中国丝绸线的Febrine疾病》.pdfTCVN 3245-1979 Febrine disease of Chinese silkwiren《中国丝绸线的Febrine疾病》.pdf

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TCVN 2350-1978 Conical heads and connection of vessels and apparatus Series of angles at the vertex《船舶和设备的锥形头和连接 顶点处的一系列角度》.pdf 4

TCVN 2350-1978 Conical heads and connection of vessels and apparatus Series of angles at the vertex《船舶和设备的锥形头和连接 顶点处的一系列角度》.pdfTCVN 2350-1978 Conical heads and connection of vessels and apparatus Series of angles at the vertex《船舶和设备的锥形头和连接 顶点处的一系列角度》.pdf

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TCVN 2344-1978 Steel castings Tolerances on dimensions and mass Residue for mechanical operations《钢铸件 尺寸和质量的公差 技术操作残数》.pdf 8

TCVN 2344-1978 Steel castings Tolerances on dimensions and mass Residue for mechanical operations《钢铸件 尺寸和质量的公差 技术操作残数》.pdfTCVN 2344-1978 Steel castings Tolerances on dimensions and mass Residue for mechanical operations《钢铸件 尺寸和质量的公差 技术操作残数》.pdf

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TCVN 2342-1978 Pulleys for driving V-shaped belts Technical requirements《驱动V形皮带用滑轮 技术要求》.pdf 11

TCVN 2342-1978 Pulleys for driving V-shaped belts Technical requirements《驱动V形皮带用滑轮 技术要求》.pdfTCVN 2342-1978 Pulleys for driving V-shaped belts Technical requirements《驱动V形皮带用滑轮 技术要求》.pdf

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TCVN 2336-1978 Pulleys for driving V-belts with spokes and boss protruding from one rim face Basic dimensions《驱动带辐条和从一个轮辋表面突出的凸台的V形皮带用滑轮 基本尺寸》.pdf 16

TCVN 2336-1978 Pulleys for driving V-belts with spokes and boss protruding from one rim face Basic dimensions《驱动带辐条和从一个轮辋表面突出的凸台的V形皮带用滑轮 基本尺寸》.pdfTCVN 2336-1978 Pulleys for driving V-belts with spokes and boss protruding from one rim face Basic dimensions《驱动带辐条和从一个轮辋表面突出的凸台的V形皮带用滑轮 基本尺寸》.pdf

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TCVN 2335-1978 Monolithie pulleys for driving V-belts with an uniloteral groove and salient boss Basic dimensions《驱动带单边槽和凸台的V形皮带用单片滑轮 基本尺寸》.pdf 7

TCVN 2335-1978 Monolithie pulleys for driving V-belts with an uniloteral groove and salient boss Basic dimensions《驱动带单边槽和凸台的V形皮带用单片滑轮 基本尺寸》.pdfTCVN 2335-1978 Monolithie pulleys for driving V-belts with an uniloteral groove and salient boss Basic dimensions《驱动带单边槽和凸台的V形皮带用单片滑轮 基本尺寸》.pdf

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TCVN 1694-2009 Chemical products for industrial use Sampling techniques Solid chemical products in the form of particles varying from powders to coarse lumps《工业用化工产品 取样技术 从粉末到粗粒的粒状.pdf 44

TCVN 1694-2009 Chemical products for industrial use Sampling techniques Solid chemical products in the form of particles varying from powders to coarse lumps《工业用化工产品 取样技术 从粉末到粗粒的粒状.pdfTCVN 1694-2009 Chemical products for industrial use Sampling techniques Solid chemical products in the form of particles varying from powders to coarse lumps《工业用化工产品 取样技术 从粉末到粗粒的粒状.pdf

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TCVN 1693-2008 Hard coal and coke Manual sampling《硬煤和焦炭 人工取样》.pdf 81

TCVN 1693-2008 Hard coal and coke Manual sampling《硬煤和焦炭 人工取样》.pdfTCVN 1693-2008 Hard coal and coke Manual sampling《硬煤和焦炭 人工取样》.pdf

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