This paper deals with the experimental study of improvement on the oil cooling ability by producing ultrasonic wave vibration in the quenching oiltrough.
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。
2
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。
3
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.