... placebo 释义：安慰剂,对照剂,无效(对照)剂 co-two control method 释义：孪生对照法,双生子对比研究法 rtc 释义：[=randomized-trial,controlled]随机对照试验 ...
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But the important means to achieve these two objectives at the same time is the Earned Value Method which is mean of project cost and schedule co-ordinate control.
而同时实现这两个目标的重要手段就是通过挣值法对工程项目费用与进度进行协调控制。
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