在示波器上面你可以看到一股电流上下振动。
On an oscilloscope, you can see an electrical current oscillate up and down.
将盆子的底部上下振动，水便会被搅得在棘轮之间来回流动。
The bottom of the dish moved up and down, sloshing the water back and forth through the ratchet.
在图9所示结构中，内支撑锥形弹簧通过其上下振动，阻止颗粒沉积到密封腔中。
As the infrastructure shown in Graph 9, the inwardly-sustaining cone-shape string prevents particles from depositing into the sealed cavity, via its vibrating up and down.
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