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In this paper, the friction and wear of cylinder liner - piston ring during running-in period has been studied.

首先论述了与该摩擦副相关的摩擦磨损研究现状，指出当前研究的不足。

The width of the piston ring and adoption of the number of rings in the form of orientation and other factors.

活塞的宽度与采用密封圈的数量、导向环的形式等因素有关。

The influence of sand ＆ dust and low pressure on dynamics of piston ring was studied.

研究了西部低气压及沙尘环境对于活塞环动力学的影响。

For its application and maintenance discussion is made on how to use effectively the piston ring and extend its life span.

从使用和维修角度，对如何合理使用活塞环并延长其寿命进行了论述。

The paper is mainly focused on the abrasion process between piston ring and cylinder.

本论文主要研究活塞环-缸套材料的摩擦磨损。

A simple testing method of wear resistance for piston ring and cylinder sleeve is introduced.

本文介绍一种简易的活塞环与气缸套磨损试验方法。

In this paper, the friction mechanism of engine piston ring / cylinder friction system was reserched.

本论文对发动机的活塞环／汽缸套这对摩擦副进行摩擦机理研究。

The results show that piston ring through LST can efficiently produce hydrodynamic pressure.

结果表明：通过在活塞环表面造型，会产生明显的流体动压力。

Actually, piston ring is working under the state of boundary lubrication and the half dry friction.

活塞环实际上是在边界润滑和半干摩擦状态下工作。

In order to adapt the development of auto engine, a lot of problem about friction and lubrication wear of piston ring must be overcome.

为适应汽车发动机发展的需要，必须解决活塞环摩擦、磨损方面的问题。

Yet, Edith says, there was always money in the bank.

但是Edith说，她的银行户口里面总是有钱。

We have created a series of files that resolve this problem--one for each day of the 40 days of purpose.

我们制作一系列的档案去解决这问题---一个为标竿40天中的每一天。