在伽利略生活的年代，人们还不会计算作变速运动物体的即时速度。
In the Galileo's times, the people still could not calculate the forthwith speed of variable motion's object.
在高压条件下，通过曲柄连杆机构的变速运动实现钻井泵动力的传递。
Through the crank link system in high-pressured condition of variable speed movement with drilling pump power transfer.
建立了适合车辆任意变速运动与任意路面不平函数的弹性支撑桥梁耦合系统的无量纲运动微分方程。
The dimensionless differential equations of motion of a coupled system consisting of an elastically supported bridge with arbitrarily uneven surface and a vehicle with varying speeds, are derived.
建立了适合车辆任意变速运动与任意路面不平函数的弹性支撑桥梁耦合系统的无量纲运动微分方程。
The dimensionless differential equations of motion of a coupled system consisting of an elastically supported bridge with arbitrarily uneven surface and a vehicle with varying speeds, are derived.
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