并利用二次超声反射波进行了液位及泥位的双距离测量实验。
Using two times echo ultrasonic, Proceeding the liquid and mud double level measure the experiment.
智能手指其实是套在两个手指上的一双塑料管，这样可用来衡量智能手指之间的距离。
The Smart Finger actually uses two fingers. The pair of plastic tubes slip over your real fingers and measure the distance between themselves.
多问问题会拉近你和身边人的距离，还有可能省下你一大部分时间，这是一箭双雕。
Asking questions will bring you closer to the people around you and likely save you a huge chunk of time. Win-win.
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