短語詞組短語reduction reaction rate 還原速度reduction of rate [稅收]降低稅率reduction of interest rate 降息reduction rate of density 密度下降率egg reduction rate 蟲卵減少率output reduction rate 減産率basis reduction rate 基準(zhǔn)縮減比率cost reduction rate 成本降低率heavy reduction rate rolling 大壓下率軋制 返回 reduction rate