This paper deals with the experimental study of improvement on the oil cooling ability by producing ultrasonic wave vibration in the quenching oil trough.

本文对在淬火油槽内用超声波振动提高油冷却能力的试验进行了研究。

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A trough is built alongside the road and kept half-filled with water which is heated by oil and air fed units at the bottom.

一个水槽沿着道路建造，水装的半满，用油和空气在底部加热。

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The canvas covering the plates is easily penetrated by oil, but is impenetrable to the wax, so that the oil drips down from the canvas into a trough beneath the press.

盖着帆布的板很容易被油穿透，但石蜡不能穿透，这样，油就从帆布滴至压滤机下面的槽内。

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The slices are washed and dried, and then plunged into the fryer, which is a big metal trough containing a briskly moving stream of boiling oil.

NEWYORKER: Snacks for a Fat Planet