natural vibration frequency 固有振动频率 ; 自振频率
natural-vibration frequency 固有振动频率
natural vibration frequency analysis 自振频率分析
second-order natural vibration frequency 二阶自振频率
natural frequency of vibration [电子] 自振频率
free vibration natural frequency 自由振动固有频率
natural frequency vibration test 固有频率振动试验
vibration natural frequency 振固有频率
Dynamic characteristics of collaborated system mainly include natural vibration frequency and principal mode, which is the base and precondition of dynamic analysis for collaborated system.
协作体系的动力特性主要包括体系的自振频率和主振型，它是协作体系结构动力分析的基础和前提。
The finite model of the derrick and drilling platform connecting unit is built and the natural vibration frequency and the corresponding vibration mode of it are given here.
建立了该钻机井架与钻台结合体固有振动特性理论分析的有限元模型并给出了其固有振动频率结果和相应的主振型。
Air spring is characteristic of variable stiffness, its natural vibration frequency is much lower than that of leaf spring and will not change with load of vehicle.
空气弹簧具有变刚度特性，其固有振动频率要比钢板弹簧低得多，且不随汽车承载质量的变化而改变。
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