失锌 meaning in Chinese

dezincification

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。
Dezincification selectively removes zinc from the alloy , leaving behind a porous , copper - rich structure that has little mechanical strength
失锌现象有选择地从合金中将锌排泄出去，使得材料变得多孔、铜含量过大，从而降低材料强度。
As a standard nibco bronze fire protection valves are made to be “ dezincification resistant , ” which is a seal of quality and longevity
作为一种基本要求，美国尼伯科青铜消防阀门都具有“抗失锌”特性，质量更加优异，使用寿命更加长。