单词：mean power
mean power的用法和样例：
例句
- The average power is therefore zero.故平均功率为零。
- Laser power beaming and propulsion, on the other hand, would require sustained average power output from lasers of megawatts to gigawatts.而激光传能及推进则要求激光器的持续平均功率输出在兆瓦到千兆瓦之间。
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