So much depends on Mother Earth and her vibrational system.
有这么多仰赖大地之母和她的震动的系统。
The effect of electric load on the piezoelectric vibrational system due to electroacoustic coupling was analytically investigated.
我们研究分析了由于电声耦合，电负载对压电振动系统特性的影响。
This paper gave the computer simulation of natural frequencies and vibrational modes of truck frames, based on the structural features of the frame, by finite element method of thin wall rod system.
本文根据汽车车架结构的特点，应用薄壁杆系有限单元法，对汽车车架的固有频率和主振型进行了计算。
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