Energy law of similitude for laser propulsion refers to the law that there is an optimum nozzle configuration for the largest value of impulse coupling coefficient at certain incident laser energy.
激光推进的能量相似律，指确定的激光能量有与之相对应的最佳喷管尺寸，使得冲量耦合系数最大且不变的规律。
The smaller the synthetic power coefficient is, the better overall performance of propulsion system will be.
综合功率系数愈小，推进系统的整体性能愈好。
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