chain substitution信息详情
链上取代
substitution───n.代替；[数]置换；代替物
chain───vt.束缚；囚禁；用铁链锁住；n.链；束缚；枷锁
substitution cipher───代替密码；替代密码；n.代用密码（或记号）
substitution effect───替代作用；替代效应
substitution method───代入法；替换法；代换法; 代入法; 代替法; 替代法
substitution drill───替换训练；替换练习；代换法
substitution bias───替代偏误
shortening substitution───缩短替代
belay chain───系链
They then traverse a substitution chain of element declarations or a type hierarchy to determine whether the element declaration satisfies the substitution or type derivation requirements.───然后遍历元素声明的代替链或类型层次结构，以决定元素声明是否满足代替或类型衍生要求。
The result shows excellent selectivity of to the 1, 3 - substitution positions, and the alkyl chain may be saturated or unsaturated and may contain one or more heteroatoms.───结果显示对1,3 -取代位置的优异选择性，并且烷基链可以是饱和的或不饱和的，并且可以含有一种或多种杂原子。
According to the principle of substitution of the generalized kinematic pair, mobility of the complex loop mechanism composed by multiple sub — chain was studied.───依据广义运动副替代原则，得到多个子链组合而成的复杂多环路机构的自由度。