"Frequency" just means the rate at which air molecules go back and forth, or a voltage fluctuates, and it can be represented as the rate at which a regular squiggle goes up and down.
频率“通常是指空气粒子来回运动的速率或者电压的波动，所以它能代表一个规则波形曲线上下波动的节律。”
Each time she moved up in vibration, the weekend with her son would cause her to roll back in frequency and become ill.
每次她提高振动，但到周末和她儿子呆一起时就导致她频率回跌而生病。
An Earth station beams a signal up to the satellite at a certain frequency, and the craft bounces it back down to another, predefined Earth station.
地面基站先用特定频率向卫星发送数据，然后卫星再将把这些数据转发给其它预先确定的地面基站。
PVC flocking materials used by high-frequency hot press molding, gas valve back up, with both gas permeability and gas leak-proof function.
用植绒PV C料经高频热压成型，倒阀门气嘴，具有双层防漏气渗气功能。
PVC flocking materials used by high-frequency hot press molding, gas valve back up, with both gas permeability and gas leak-proof function.
用植绒PV C料经高频热压成型，倒阀门气嘴，具有双层防漏气渗气功能。
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