英语词汇copper stain怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	copper stain
释义	copper stain 简明释义铜斑网络释义 1 ?铜斑 ... 铜基合金轴承 copper base bearing 铜斑 copper stain 铜柱测压器 copper crusher ... 短语 1 copper stain test 铜片试验 2 copper stain test copper-strip test 铜片试验双语例句 1 These desulfurizing agents proved to be excellent: reducing the total sulfur of LPG significantly and making the grade of copper stain test go down from 3 to 1. 结果表明，该脱硫剂脱硫效果很好，使液化气的铜片腐蚀从3级降至1级，总硫明显下降。 2 No stain to copper and their alloys. 不会腐蚀铜以及它们的合金。 3 L No stain to copper and their alloys. 不会腐蚀铜以及它们的合金。
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