单词：chemical shift
chemical shift的用法和样例：
例句
- Solvent effects on proton chemical shifts of ergosterol and its derivatives were investigated.首次研究了麦角甾醇及其衍生物的氢化学位移溶剂效应。
- Since fulvenes show no evidence of ring currents, the chemical shifts of the protons will be found in the normal definite region.既然富烯不显示环电流存在的迹象，所以质子的化学位移仍然发生在正常的链烯区。
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