Braking system double pipe air brake system, parking brake, exhaust brake.

双管路气制动系统，带驻车制动、排气制动。

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The heat pipe air preheaters are widely used in the recovery of waste heat of gas.

热管式空气预热器广泛应用于烟气的余热回收。

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The research of recuperative air preheater is summarized, such as pipe air preheater, plate air preheater.

前言： 总结了近年来关于间壁式空气预热器方面的研究，如管式空气预热器及板式空气预热器；

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The blast was caused by fuel leaking into a dry bay and igniting on contact with a hot air pipe.

BBC: Nimrod families launch legal bid

In the Taishan ruling, he cited reports from experts including Sandia National Laboratory showing that sulfur fumes escaping the tainted wallboard can cause pitting in wires and copper pipe as well as heating and air conditioning systems.

FORBES: Wallboard Decision Could Bite U.S. Companies

Consider media accounts of how WD-40 was used to extract a python from a bus exhaust pipe or a burglar stuck in an air duct (yes, he was arrested).

FORBES: Greasy Coca-Cola