例句與用法

1. The determination of trace concentrations of mercury in minerals is described
   文章論述礦物中痕量汞的測定。
2. The determination of trace concentrations of mercury in mineral materials is described
   譯文：文章論述礦物中痕量汞的測定。
3. A highly sensitive chromatographic system is desirable particularly for monitoring analyte present in trace concentrations within samples
   高靈敏的層析系統(tǒng)是一個理想的系統(tǒng)，特別對監(jiān)測存在于樣本追蹤濃度的分析物。
4. As an example , a test with the water sample in which nitrobenzene is in a trace concentration and treated using spe for gc analysis has showed a perfect result
   文章從選擇固相萃取柱到萃取液進入色譜分析這樣一個完整的過程，并以使用該技術(shù)萃取環(huán)境水樣中的硝基苯類化合物為例，具體闡述了如何使用固相萃取技術(shù)建立一個方便實用的環(huán)境水質(zhì)監(jiān)測分析方法。