例句與造句

1. The determination of trace concentrations of mercury in minerals is described
   文章論述礦物中痕量汞的測(cè)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(cè)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(gè)理想的系統(tǒng)，特別對(duì)監(jiān)測(cè)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(jìn)入色譜分析這樣一個(gè)完整的過(guò)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(gè)方便實(shí)用的環(huán)境水質(zhì)監(jiān)測(cè)分析方法。
5. It's difficult to find trace concentrations in a sentence. 用trace concentrations造句挺難的