单词：system effectiveness
system effectiveness的用法和样例：
例句
- The German telephone system is highly efficient.德国的电话系统效率很高。
- In order to raise waterflood system efficiency,first of all high efficiency motors and water injection pumps should be selected.为提高注水系统效率，首先应选用高效的电机和注水泵，对注水量小注水压力高的小采油区宜选用柱塞泵。
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