韦氏硬度计|巴氏硬度计|维氏硬度计|磁力式洛氏硬度... ... 冷辘钢捆片及张片的电镀和印刷方法 Cold rolled steel coil & sheet electro-plating & painting method 冷辘(低碳)钢片的分类用、途、工业标准、品质、加热状态及硬度表 End usages, industrial standard, quality, condition and hardness of cold rolled steel strip 硬度及拉力 Hardness & Tensile strength test ...
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