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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The paper presents the principle of boundary layer control for submerged vortex generators of concave shape.

本文介绍了一种新型的凹型面埋入式涡流发生器的工作机理。

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The utility model provides an improved front lifting compartment. The cross section of the front plate of the compartment is in the concave shape.

本实用新型提供一种改进的前顶举升车厢，车厢前板的横截面为凹形。

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The panel itself was in remarkably good shape, now distinctly concave but looking perfectly ready to stop a few more rounds.

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The name contains the shape: a hoh is a ridge that rises to a point and has a concave end.

ECONOMIST: Margaret Gelling