X-B

常见例句

T ?????0 - ` D + 3 4 X 4 D 2 X 9 X B 1 N ??/ ?. R I . ?. J ?. L ?. D ??
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The j X b force shoots the plasma out of the rocket, and the ensuing reaction force accelerates the rocket.
j X b的力将等离子体抛离火箭,由此产生的反作用力就加速火箭。
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