一定元素的某个具体原子构成的化学键的数量，叫做这种元素具体原子的化合价(valence)。
... chemical unit ==> 化学单位 chemical valence ==> 化学价,化合价 chemical vapo(u)r-phase oxidation ==> 化学汽相氧化 ...
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化学等价 chemical equivalence ; chemically equivalent
化学位移等价 chemical shift equivalence
化学键·价 Chemical Bond and Valence
化学物安全评价 safety evaluation of chemicals
基于价带化学修饰 CMVB
多样化课堂教学评价 Diversity of teaching evaluation ; Diverse classroom teaching evaluation ; Diversity evaluation of classroom teaching
化学键统称共价重键 multiple covalent bond
文学文化价值 literacy and cultural value
地球化学评价 geochemical evaluation
致癌的铬：世界上很多地方通过铬把兽皮制成皮革，铬在六价化学结构下是强烈致癌物。
CARCINOGENIC chromium: Turning hides into leather in much of the world requires chromium, which in its hexavalent chemical form is a potent carcinogen.
从磺基水杨酸与三价铁离子配合物的组成及稳定常数测定实验入手，探讨了化学实验中的教学技巧问题。
By determining the composition and stable constants of sulphuric iron salicylate, this article probes into the teaching skills in chemistry experiments.
煎炸油在加热过程中由于高温发生一系列的化学反应，导致煎炸油中的酸价、过氧化值、极性物质含量等指标发生变化。
Several chemical changes undergo during the frying oil heated, inducing varieties of free fatty acid content, peroxide value and the quantity of the polar components.
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