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$NF B40-312-1989 Refractory products - Dense insulating shaped products - Determination of ultrasonic propagation vetocity in transmission《耐火产品致密隔热成型产品测定超声波传输过程中的传播速度》.pdf$ 4

$NF B40-312-1989 Refractory products - Dense insulating shaped products - Determination of ultrasonic propagation vetocity in transmission《耐火产品致密隔热成型产品测定超声波传输过程中的传播速度》.pdf$ NF B40-312-1989 Refractory products - Dense insulating shaped products - Determination of ultrasonic propagation vetocity in transmission《耐火产品致密隔热成型产品测定超声波传输过程中的传播速度》.pdf

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$NF B40-311-1989 Refractory products - Dense insulating shaped products - Determination of the resonance frequency through mechanical impacting《耐火产品密实绝缘定型产品通过机械冲击进行谐振频率测定》.pdf$ 4

$NF B40-311-1989 Refractory products - Dense insulating shaped products - Determination of the resonance frequency through mechanical impacting《耐火产品密实绝缘定型产品通过机械冲击进行谐振频率测定》.pdf$ NF B40-311-1989 Refractory products - Dense insulating shaped products - Determination of the resonance frequency through mechanical impacting《耐火产品密实绝缘定型产品通过机械冲击进行谐振频率测定》.pdf

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$NF B40-310-1997 Methods of test for dense shaped refractory products Part 12 determination of pyrometric cone equivalent (refractoriness) 《致密异型耐火制品的试验方法第1部分相应（当量）测温锥的测定(耐火度)(欧洲标.pdf$ 12

$NF B40-310-1997 Methods of test for dense shaped refractory products Part 12 determination of pyrometric cone equivalent (refractoriness) 《致密异型耐火制品的试验方法第1部分相应（当量）测温锥的测定(耐火度)(欧洲标.pdf$ NF B40-310-1997 Methods of test for dense shaped refractory products Part 12 determination of pyrometric cone equivalent (refractoriness) 《致密异型耐火制品的试验方法第1部分相应（当量）测温锥的测定(耐火度)(欧洲标.pdf

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$NF B40-309-1986 Refractories - Determination of the density the open porosity and the total porosity of materials in grain form《耐火材料晶粒形状材料的密度开气孔和总孔隙度的测定》.pdf$ 5

$NF B40-309-1986 Refractories - Determination of the density the open porosity and the total porosity of materials in grain form《耐火材料晶粒形状材料的密度开气孔和总孔隙度的测定》.pdf$ NF B40-309-1986 Refractories - Determination of the density the open porosity and the total porosity of materials in grain form《耐火材料晶粒形状材料的密度开气孔和总孔隙度的测定》.pdf

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$NF B40-308-1986 Refractories - Determination of thermal expansion at elevated temperatures《耐火材料高温热膨胀的测定》.pdf$ 5

$NF B40-308-1986 Refractories - Determination of thermal expansion at elevated temperatures《耐火材料高温热膨胀的测定》.pdf$ NF B40-308-1986 Refractories - Determination of thermal expansion at elevated temperatures《耐火材料高温热膨胀的测定》.pdf

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NF A56-103-2-1996 Tin and tin alloys Pewter and pewterware Part 2 pewterware 《锡及锡合金铅锡锑合金和铅锡锑合金器皿第2部分铅锡锑合金器皿》.pdf

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$NF B40-308-1986 Refractories - Determination of thermal expansion at elevated temperatures《耐火材料高温热膨胀的测定》.pdf$ NF B40-308-1986 Refractories - Determination of thermal expansion at elevated temperatures《耐火材料高温热膨胀的测定》.pdf

NF A56-103-2-1996 Tin and tin alloys Pewter and pewterware Part 2 pewterware 《锡及锡合金铅锡锑合金和铅锡锑合金器皿第2部分铅锡锑合金器皿》.pdf

NF A56-103-1-1995 Tin and tin alloys Pewter and pewterware Part 1 pewter 《锡及锡合金锡锑铅合金和锡锑铅合金器皿第1部分锡锑铅合金》.pdf

NF A56-102-1995 Tin and tin alloys Ingot tin 《锡及锡合金锡锭》.pdf

NF A56-101-1985 Antifriction alloy ingots Characteristics 《减摩合金锭特性》.pdf

NF A55-301-1999 Zinc and zinc alloys Castings Specifications 《锌及锌合金铸件规范》.pdf