roll-rateBNC²³⁶²¹³⁺¹ 基本例句 滚转率;滚转角速度 The mechanism of roll-rate through zero is analysed. The altitude of zero roll- rate for including roll damping influence and the impact dispersion as a result of zero roll-rate are formulated. 本文分析了滚速过零的机理,推导了考虑滚动阻尼影响的过零高度公式,以及滚速过零影响下的落点散布公式。 cnki