为了减少磨损，提高活塞环的使用寿命，对整体无背压活塞环的设计进行了研究。
The design of integral non-backpressure piston rings was studied in order to reduce wear and to raise the piston ring life.
分别对开口有背压活塞环和整体无背压活塞环的工作原理和结构作了阐述。
The work principle and structures of backpressure piston rings and integral non-backpressure piston rings were expounded.
该装置主体由内管、外管、活塞管、端盖、承压环、吊耳、液路元件和密封元件等组成。
The device is mainly made up of inner tube, outer tube, piston tube, end cover, retaining ring, hanger, liquid-route element and sealing element.
通过对机车柴油机超压现象的原因分析，得出导致柴油机超压的原因有：活塞顶裂纹、活塞气环折断、气缸套磨损。
The cause of over-pressure in Diesel Engine includes fracture on piston, fracture of piston rings and cylinder wear.
通过对机车柴油机超压现象的原因分析，得出导致柴油机超压的原因有：活塞顶裂纹、活塞气环折断、气缸套磨损。
The cause of over-pressure in Diesel Engine includes fracture on piston, fracture of piston rings and cylinder wear.
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