powdery substance

基本解释

Whole wheat flour is a powdery substance derived by grinding or mashing the wheat's whole grain.
全麦面粉是由研磨或捣碎整个小麦所得。
An in service valve suffering from Dezincification has a white powdery substance or mineral stains on its exterior surface.
应用中的阀门如果出现脱锌现象，在产品表面就会出现粉状物质或矿物污点。
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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The powdery lignin, once separated from the cellulose, is a very useful substance in its own right.
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