推力变化 meaning in Chinese

thrust fluctuation

Calculating result showed : the thrust changing caused by the magnitude of at / ac was more larger than that both of the pressure index : " n " and of the chamber diameter , and the best thrust could be get when at / ac < 0 . 3
由数值计算可知， at ac的大小变化所引起的推力变化比压力指数n和药室直径的变化引起的变化大得多，而且当at ac 0 . 3时，可以得到最佳的推力效果。