铜和铜合金具有优异的导电、导热及其它性能，是重要的工业材料之一。
Copper and its alloy, because of their excellent electrical and thermal conductivity and other properties, are important materials in industries.
提出了增感效应导数火焰原子吸收光谱测定金属铜和铜合金中微量铬的新方法。
A new method for the determination of trace chromium in copper and copper alloy by enhancing effect-flame atomic absorption spectrometry with derivative technique is pro - posed.
一般电接点仪表只适用于对铜和铜合金无腐蚀作用的液体，气体等，介质的测量。
General Instrument, contact only applies to copper and copper alloy no corrosive effect of the liquid, gas, media measurement.
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