trace metal element

常見例句

雙語例句

• This paper makes a survey of trace metal element of human hair with FAAS.
  運用火焰原子吸收光譜法（FAAS）測定人發(fā)中微量金屬元素。
• The mass and trace metal element contents in the plant had to be measured in grade estimation of farm enviroment.
  植株金屬元素含量是農(nóng)田環(huán)境質(zhì)量評價中的必檢項目。
• From the chemical composition, trace element, inoculation and thermal exchange of metal mold casting, the principle of chill formation and the effective methods for preventing chill were studied.
  文章從鑄鐵的化學成分、微量元素、孕育處理及金屬型的熱交換方面敘述了產(chǎn)生白口的原理及防白口的有效方法。
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