the amount of gold的用法和樣例：
例句
- The massive sulfides related to felsic volcanic rocks in the back-arc and island arc environments have higher content of gold.
通常形成于弧后或島弧環(huán)境下的同長(cháng)英質(zhì)火山巖有關(guān)的塊狀硫化物中的金含量較高。 - The features of thermoluminescence of quartz in gold ore are described, and its relations to gold mineralization and composition of quartz are analyzed.
本文描述了贛中地區若干金礦床石英熱發(fā)光特征，分析了其與金含量及化學(xué)成分之間的關(guān)系。
