“coper”造句，怎麼用coper造句

Detremination of coper, Iron and Zinc in Suse by Flame Atomic Absorption spectrometry;

This paper, based on cointegration theory, empirically analyses the relation of future and present prices of coper in Shanghai market.

Metallogenic Geological Characteristics and Forecast for the liushanyan coper-zinc mine Deposite

Wrot copper performs well in high temperature applications and is easily joined by soldering or brazing. Wrot coper is exclusively used for fittings.