碎屑物常量化学成分投点表明，其形成时构造背景属被动大陆边缘。
The data of chemical composition of sediments indicate that the tectonic background of the turbidites is passive continental margin environment.
花岗岩类的常量化学成分，属高钾钙碱性系列花岗岩类，具同熔型或i—型花岗岩的特征。
The petrochemistry composition belongs to high potassium Ca-alkaline series, showing the special feature of syntectic or I-typed granite.
本文围绕定量分析实验中，利用常量仪器进行半微量化学分析进行探讨。
The article focuses on quantity analysis, discussion of using constant quantity instrument to do semimicro chemical analysis experiment.
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