钢材取样块
To test hard alloy wire drawing die A whose price is RMB 20.2 yuan a piece and B whose price is 10 yuan a piece under same process equipment conditions. The wear and tear of the die per tone steel wire, wire broken times?
对价格为202元/块和10元/块的硬质合金拉丝模A和B在同样的工艺设备条件下进行试验。
This paper discusses the corrosive mechanism of the P 110 casing steel in saturated brine by piece-corrosion-test.
饱和盐水溶液是深探井试油完井液的主要成分,对套管具有极强的腐蚀性.
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