英语释义

• valence characterized by the sharing of electrons in a chemical compound; the number of pairs of electrons an atom can share

片语

covalence radii原子共价半径

imine covalence亚胺结构

double covalence双共价

covalence electron共价电子

covalence adsorption共价吸附

covalence function共价函数

polar covalence极性共价

covalence elongation共价延伸方式

covalence bond共价键

contravalency共价

covalent linkage共价键

英汉例句

• transition metal nitrides belong to a class of interstitial compounds, have the properties of covalence compound, ion crystal and transitional metals.

  过渡金属氮化物是一类金属间充型化合物，兼具有共价化合物、离子晶体和过渡金属的性质。

• the results show that the covalence bond-net is much stronger than in gpb zone and the whole covalence energy of s「 phase is much strong.」

  结果表明，gpb区具有较强的共价键络，而s″具有较强的总共价成键能，这两种析出相的主体共价键络都对合金基体具有增强作用。

• c_(60) is one kind of fullerene with high conjugated cage-types structure. its covalence between two hexagons has high reactivity, which behaves as addition reaction of double bond.

  是高度共轭的笼状结构的碳素体，分子结构中六边形环间的共价碳碳双键是富电子区，反应性能与烯烃有类似性，主要表现为双键加成。

• the results show that the hydrogen of c—h bond on acfs were substituted by fluorine at different condition. the c—f covalence bond was built at molecular level.

  结果表明，随着反应时间和温度的变化，活性炭纤维表面氟取代氢基数目增加，同时在分子水平上形成c—f共价键。