powdery substance翻译
powdery substance的基本解释
读音: 美: 英:
粉末状物质
例句
An in-service valve suffering from Dezincification has a white powdery substance or mineral stains on its exterior surface.使用中的阀门如果遭遇脱锌侵蚀，会在阀门外表产生白色粉末或矿物污点。A letter containing a powdery substance is believed to be the source of the anthrax becteria that showed up as a skin rash on an NBC employee.一封带有粉状物质的信件被确定为炭疽热细菌的来源，因为一位NBC雇员已经由此得了皮炎。
The physical attributes of an in-service valve with Dezincification includes a white powdery substance or mineral stains on its exterior surface.使用中的阀门出现失锌想象时的物理特征包括：在外表面出现白色粉末或矿物污点。
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