音标：['veilәns]
n. 原子价
【化】 化合价; 原子价
【医】 效价; 价(化合价,原子价)
在线英汉词典

valence的短语、例句：

valence n (chemistry 化) 1 [U] capacityof an atom to combine with, or be replaced by, another or others as compared with that of the hydrogen atom 化合价; 原子价
Carbon has a valence of four. 碳的化合价是四价. 2 [C] (US) = valency.