the amount of gold的用法和样例：
例句
- The massive sulfides related to felsic volcanic rocks in the back-arc and island arc environments have higher content of gold.
通常形成于弧后或岛弧环境下的同长英质火山岩有关的块状硫化物中的金含量较高。 - The features of thermoluminescence of quartz in gold ore are described, and its relations to gold mineralization and composition of quartz are analyzed.
本文描述了赣中地区若干金矿床石英热发光特征，分析了其与金含量及化学成分之间的关系。
