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1·Inserting ring carrier to the wearing piston of high-power medium speed diesel engine is a useful repaired way.

大功率中速柴油机磨损的活塞镶装镶圈是一种有效的修复方法。

2·Valve rotator is an important device to ensure the normal operation of the inlet and exhaust valves of a medium speed diesel engine.

旋阀机构是保证中速柴油机进、气阀正常工作的重要装置。

3·To meet the market demand, a new medium-speed X6170Z diesel engine was designed and developed by Weichai Power CO.

为满足市场需求，潍柴动力股份有限公司自行开发研制了X6170Z型新一代中速柴油机。

4·This article has described the RR bending and upsetting process for crankshaft forging of the medium and high speed diesel engine.

简要介绍了中高速柴油机曲轴锻件的RR弯曲镦锻工艺。

5·Trough the investigation on the performances of some kinds of additives, the formula composition of DCB4012CF Marine diesel engine oil with medium speed and cylindrical piston type was validated.

通过对各类添加剂性能的考察，确定了DCB4012 CF船用中速筒状活塞柴油机油的配方组成。

6·This Paper analyzes and calculates fatigue of the total and the single-throw crankshaft through finite element about the diesel engine medium-height speed.

本文主要是利用有限元法对某型中高速柴油机的整体曲轴和单拐曲轴分别进行强度计算分析。

7·Model GN8320 Marine Diesel Engine is a medium speed series diesel engine. It is designed and manufactured by ourselves. It is good diesel engine instead of foreign.

GN8320型船用柴油机系我国自行设计、自行制造的中速船用柴油机系列产品，是替代进口机的良好机种。

8·Model G6300 Marine diesel engine is a medium speed series diesel engine. It is designed and manufactured by ourselves. It is good diesel engine instead of foreign.

G6300型船用柴油机系我国自行设计、自行制造的中速船用柴油机系列产品，是替代进口机的良好机种。

9·In this paper, the design basis, calculation method and construction feature of the new type composite oil ring with helical spring used in the medium and high speed diesel engine are described.

本文介绍了一种中、高速柴油机上使用的螺旋弹簧式组合油环的设计依据、计算方法及结构特点，总结了在120型柴油机上的试验结果。