duplex brass
... 两相橡胶 diphase rubber 两相黄铜 duplex brass 两端划针 double-point scriber ...
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两相黄铜的脱锌现象，是一种腐蚀，当接触到某些侵蚀性水时可能发生。
Dezincification of duplex brass, which is a form of corrosion, may occur when in contact with certain aggressive waters.
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