The natural vibration problem of the rod can be treated by discretion as a natural vibration problem of a spring-mass system, using finite element method or finite difference method.
杆件的固有振动问题，可用有限元方法或差分法离散化为一个弹簧-质点串联系统的固有振动问题。
If these conditions are satisfied, the simply connected spring-mass system may be constructed uniquely. An algorithm is used to construct the physical realizable system from the data.
如果这些条件得到满足，则可惟一地构造简单连接弹簧-质点系统，并给出了构造真实物理系统的一个算法。
Helical spring mass system (HSMS) is widely used in almost all of mechanical and electrical products due to its structure feature and elastic buffer ability.
螺旋弹簧质量系统由于其结构特点及其缓冲作用在几乎所有机电设备和系统中都有广泛的应用。
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