substitution

代替；[数] 置换；代替物英释中释nwhen someone or something is replaced by someone or something else, or the person or thing being replaced

1 degree of substitution,取代度；饱和度；代换的次数

2 substitution reaction,取代反应；置换反应

3 substitution method,代入法；替换法

4 import substitution,进口替代

5 substitution effect,替代效应

6 elasticity of substitution,替代弹性

7 direct substitution,直接取代

1 Coach Ross made two substitutions in the second half..罗斯教练在下半场两次换人。