美 [ˈkemɪkl ˈelɪmənt]
化学元素:最简单的化学物质之一,无法在化学反应中分解。
any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
同义词: element
元素-引用次数:10
化学成分-引用次数:7
The experiment done on chemical element approved that white patrinia may contain amino acid, protein, amylase, fattiness, naphthtannins, hydroxybenzene, organic acid, flavone, coumarin, triterpene, steroid and saponins.
化学成分预试验结果表明,白花败酱中可能含有氨基酸、蛋白质、多糖、脂肪、挥发油、鞣质、酚类、有机酸、黄酮、香豆素、三萜、甾体、皂苷等成分。
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...ells一、微生物细胞的化学组成二、微生物的一、微生物细胞的化学组成二、微生物的6类营养要素 (一)化学元素(chemical element):(一)化学元素(chemical element):大量元素(macroelement):碳、氢、氧、氮、磷、硫、钾、镁、钙、铁(其中前六种占细菌细胞干重...
文章详细信息 关键词: 气溶胶;;PM10;;元素;;富集因子 [gap=1260]Keywords: Aerosol;PM10;Chemical element;Enrichment factor
... trace element 稀有元素 ; 微量元素 ; 痕量元素 ; 苦味素 chemical element 化学元素 ; 元素 ; 化学成分 Transuranium element 超铀元素 ; 超铀元素 ; 铀后元素 ...
Each pattern stands for a distinct chemical element, and so different sets or patterns of spectral lines mean that the star has a different chemical composition.
每一种样式代表一种不同的化学元素,所以光谱线的不同集合或模式意味着这颗恒星有不同的化学成分。
The chemist found a new chemical element.
那位化学家发现了一种新的化学元素。
What is the nature of the new chemical element?
这新的化学元素特性怎样?。
Silicon is a chemical element (Si), which can be found on the Periodic Table.
The main element is a chemical called tetrahydrocannabinol (THC).
This knowledge is needed to design a chemical that looks enough like the relevant spike element to prompt the immune system to make antibodies that will neutralise it.