In addition, the oil has good compatibility with the copper metal, in the ASTM D130 test in the assessment of 1b.

此外，该油品具有与铜金属的良好相容性，在ASTM D130试验中的评定等级为1b。

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The corrosion inhibitor can prevent overall corrosion and local corrosion of the copper metal during contacting the seawater or the sodium chloride solution.

本发明产品能防止与海水或氯化钠溶液的接触过程中金属铜的全面腐蚀和局部腐蚀。

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This paper discussed the reason of the copper metal alloy exchange-heat corrosion and "copperizing" phenomenon, and put forward the antisepsis countermeasure.

前言： 本文对铜合金复水器腐蚀原因及“镀铜”现象产生原因进行了探讨，并在此基础上提出了防腐蚀对策。

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They're studying practical things like marble work, and metal work, and copper work, and not just shipbuilding.

他们学习一些实用的东西,比如大理石打磨,金属冶炼和铜器制造,并且不仅仅是造船术

耶鲁公开课 - 欧洲文明课程节选

Before that we could only produce copper metal from deposits of copper sulfides.

FORBES: But Every Generation Does Indeed Exhaust Its Mineral Reserves

The precious metal silver and copper, an industrial metal, were particularly hard hit during the final four weeks of the quarter as silver lost 27.9% and copper lost 24.9% during the month of September.

FORBES: Is The Commodities Bull Run Over?

The War Memorials Trust estimates one monument is vandalised per week for its bronze, copper or other metal, despite them having "relatively little value".

BBC: Prestbury war memorial