Fellow of the Institute of Journalists 新闻记者协会会员;Fiji 斐济(国际交通工具证照字母);frequency jumper identification 频率跳变鉴别;
Actions equals minus reactions, according to Newton's Third Law, so this force, Fij, will be exactly the same as Fji, except in the opposite direction.
作用力等于反作用力,这是牛顿第三定律,因此Fij与Fji完全相等,但它们方向相反。
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