短語詞組短語replacement reaction rate 置換反應(yīng)速度Pension replacement rate 養(yǎng)老金替代率birth replacement rate 人口置換率annual replacement rate 一年一度的置換率even replacement rate 等值換率gas replacement rate 氣體置換率gross replacement rate 毛替代率net replacement rate 替代率 返回 replacement rate