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烧结金属材料和硬质合金电阻率的测定
Sintered metal materials and hardmetals--Determination of electrical resistivity
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电真空器件及电光源用钨、钼材料电阻率的测试方法
Method for the determination of the resistivity of tungsten and molybdenum used in electric light sources and vacuum tubes
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电工钢片(带)层间电阻、涂层附着性叠装系数测试方法
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金属材料电阻系数测量方法
Test method for electric resistance coefficient of steel wires
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橡胶塑料拉力、压力、弯曲试验机技术要求
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涂装前钢材表面粗糙度等维的评定(比较样块法)
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铁矿石(烧结矿、球团矿)容积密度测定方法
Iron ores (sinter and pellets)--Determination of bulk density
价格：￥0.00
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