valence中文什么意思

n.
【化学】(化合)价；(原子)价；【生物学】效价。n.
＝ valance.

• valence valence:    离子价
• absolute valence:    绝对价, 最高价
• active valence:    有效化合价

例句与用法

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1. The outer ring contains the valence electrons .
   排在外层的有价电子。
2. A closely related concept is that of free valence .
   一个密切有关的概念是自由价。
3. The magnetic fields of the valence electrons do not cancel .
   价电子的磁性没有抵消。
4. All five valences are the ordinary, nonpolar ones .
   所有5个价键都是普通的非极性键。
5. The valence atom of an alkali-metal atom has two states .
   碱金属原子的价原子具有两种能态。

英文释义

名词

1. (chemistry) a property of atoms or radicals; their combining power given in terms of the number of hydrogen atoms (or the equivalent)
   同义词：valency
2. (biology) a relative capacity to unite or react or interact as with antigens or a biological substrate
   同义词：valency