When water is pumped out of a chamber below the plate creating negative pressure, the stretchable sensors are pulled down, producing a concave shape.

当水从板下的一个腔中被抽出来产生负压时，可伸缩的传感器被向下拉，形成一个凹形。

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One plate is positive, the other negative.

一板为正极，另一板为负极。

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One carbon-coated plate, or electrode, is positive, and the other is negative.

一块碳涂层板或电极为正，另一块为负。

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When the charge is applied, if the upper plate is negative, we would expect that the negative droplet would be repelled at a rate exceeding the gravitational fall.

当电荷起作用时，如果上边的板子是负电的，我们可以期待负电的液滴会,超过重力下降速度的速度被排斥。

麻省理工公开课 - 固态化学导论课程节选