你可以要求给你的自来水做化学分析。
We know the constitution of mineral through chemical analysis.我们通过化学分析知道矿物的构成。
Radiocarbon dating had to do with chemical analysis, something to do with measuring the amount of radiocarbon that's left in organic stuff.放射性碳年代测定法涉及到了化学分析,与文物中残留的有机物成分所释放的放射性碳的含量测定有关。