chemical constitution 化学组成 ; 化学构造 ; 化学成分
chemical constitution deep 色度深
chemical l constitution 化学结构 ; 化学构造
We know the constitution of mineral through chemical analysis.
我们通过化学分析知道矿物的构成。
Objective: To review the research advances in the chemical constitution and pharmacological activities of the Gelsemium elegans.
目的：综述马钱科胡蔓藤属钩吻植物化学成分及药理作用的研究进展。
The foundry technology for resistant pressure base seat of submarine motor were discussed from some respects of chemical constitution, analysis of casting structure, modeling materials etc.
从化学成分、铸件结构、造型材料等几个方面探讨了潜水电机耐高压机座的铸造工艺。
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