用“coper”造句大全,coper造句
Detremination of coper, Iron and Zinc in Suse by Flame Atomic Absorption spectrometry;
Wrot copper performs well in high temperature applications and is easily joined by soldering or brazing. Wrot coper is exclusively used for fittings.
Metallogenic Geological Characteristics and Forecast for the liushanyan coper-zinc mine Deposite
This paper, based on cointegration theory, empirically analyses the relation of future and present prices of coper in Shanghai market.