moving stage meaning in Chinese

变动阶段

Folds used to be willing to wait patiently for a slow - moving stage coach , but now they kick like the dickens if they miss one revolution of a revolving door
过去人们一向乐于耐心等待慢吞吞的公共马车，可现在若错过旋转门的一次旋转，他们就乱踢一气。
The method is described as follows : the velocity of the moving part and the gas chamber pressure were measured with a dynamic test measurement system ; a dynamic model was built on force analysis of the moving part ; the total kinetic resistance replaced the horizontal friction and water resistance ; then the resistance - velocity relation curves at moving stages were obtained ; with the empirical formula of the gas chamber pressure and the resistance - velocity relation curves , the preliminary dynamic characteristics were analyzed and the structural form and key parameters of an underwater assault rifle were determined
具体方法为：由动力学测量系统测得活动件速度和气室压力；分析活动件的受力，建立动力学模型；以运动总阻力代替水平方向上的摩擦阻力和水阻力，获得各运动阶段的阻力速度关系曲线；利用气室压力经验公式和阻力速度关系曲线，对水下突击步枪进行初步的动力学分析，确定其构造型式及主要参数。