It provides a theoretical basis for harvesting the low-frequency vibration energy in environment and designing self-powered device of sensor network.
为采收环境低频振动能量，实现网络传感器自供电装置提供了设计的理论依据。
They are powered by an electric motor or an engine, connected through gears, belts, or a flexible elastomeric coupling to reduce vibration.
他们采用电动马达或引擎，通过连接的齿轮，皮带，橡胶或弹性耦合，以减少振动。
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