Based on balancing equation of framework of rock and soil and the principle of virtual work, the stress balancing equation can be acquired.
根据岩土体骨架的平衡方程和虚功原理建立应力场平衡方程。
The dynamic equation of elastic linkage with compliance elements is derived for the first time and the validity of new balancing method is discussed.
首次推导出具有弹性元件的弹性连杆机构动力学方程，从理论上阐述了此平衡方法的有效性。
The natural frequencies, the equation of motion and the node of vibration are discussed for the vibration system of a cradle dynamic balancing machine.
本文讨论了框架式动平衡机振动系统的自然频率运动方程、振动中心等问题；
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