Some oscillation of the fuselage had been noticed on early flights.在之前的几次飞行中，就已经察觉到机身有些摇晃。Its oscillation depends on the strength of the gravitational field.它的振动幅度取决于引力场的强度。the oscillation of the compass needle罗盘指针的摆动...
军需品缺乏a shortage of munitions要使这些工厂适于生产军需品.The factories are keyed to produce the things that their army needs.这个组织依赖欧洲秘密供应军需品.This organization depended on European back doors for military supplies....
Kinematics and dynamics of mechanical systems including rigid bodies in plane motion.机械系统的运动学与动力学包括刚体的平面移动.The kinematics phase configures of different configurations are shown and analyzed.做出不同条件下,不同构态的运动相图,最后对相图做出分析.De...