Often in ac circuit by air damping model time relay, it is to use the principle of air through orifices throttling to obtain delay action.
在交流电路中常采用空气阻尼型时间继电器，它是利用空气通过小孔节流的原理来获得延时动作的。
Early in the circuit often USES air damping model time relay, it is to use the principle of air through orifices throttling to obtain delay action.
早期在交流电路中常采用空气阻尼型时间继电器，它是利用空气通过小孔节流的原理来获得延时动作的。
In this paper, the vibration mechanic at model for a no-base, V-type positon air compressor is deduced, some elementary problems of design and calculation of damping system are expounded.
本文导出了无基础V型活塞式空气压缩机振动的力学模型，阐述了减振系统设计计算的基本问题。
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