bunsen roscoe lawreciprocity lawreciprocity theoremreciprocitylaw倒: reverse易: easy倒易律,反比律: law of reciprocity; lawofreciprocity倒易律失效: reciprocity failure; reciprocityfailure低强度倒易律失效: low intensity reciprocity failure (lirf)下载手机词典可随时随地查词查翻译