chamber diameter meaning in English

腔的内径

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。
When the propellant was lead styphnate and nickel hydrazine nitrate , their properties of ignition and thrust were investigated under different chamber diameter and different proportion of the mixed propellant . the influence of different thruster parameters on thruster properties was calculated
研究了史蒂酚酸铅和硝酸肼镍在不同药室直径和药剂配比下的点火和推进性能，并且计算了推力器参数对推力性能的影响。