铅能改善黄铜的切削性能﹔这种易切削黄铜常用作钟表零件。
Lead can improve the cutting performance; brass this easy cutting brass used as watch &clock parts.
锡可有效改善钢材的易切削性能，原因是在切削温度范围内富集在晶界的锡使钢材的塑性降低。
It improves the machinability of steels because of brittlement of grain boundaries resulting from the tin segregating on the grain boundaries of the steels.
采用熔铸、挤压、拉拔的方法生产出了以镁代铅的环保型易切削黄铜材。
A new environmental friendly cutting brass containing magnesium instead of lead was produced by casting, extruding and drawing.
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