電力供應(yīng)的英文單詞（電力供應(yīng)的英文縮寫）
InthelastLearn-It,welookedatdemandandinparticular,consumers'effectivedemandforvariousgoodsandservi...
曲線的移動(dòng)
InthelastLearn-It,welookedatdemandandinparticular,consumers'effectivedemandforvariousgoodsandservi...