单词：propulsive force
propulsive force的用法和样例：
例句
- Thus, the best streamlined position without any propulsive force is undesirable.因此，即便是最好的流线型位置但如果没有任何的推进力就是不可取的。
- It should be noted at that position each champion is applying propulsive force.需要注意的是在这个姿态每个冠军都是在用推进力。
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