磨损

This method displays the whole process of the contact between drill stem and well wall, and gives contact points and contact forces. It provides a reliable and practical aidlifetime of the drill stem. The method presented in this paper may also be adapand extended reach well drilling.

为实钻时，防止钻柱磨损和对钻柱寿命的预测提供了依据，对钻柱的结构设计以及钻柱力学的研究具有一定指导意义，本方法适用性强也可应用于定向井、大位移井等同类问题的研究。

When it is drilling, Drill stem's service life is reduced seriously, because of the flections distortion and the wear and tear with casing-pipe wall.

在钻进时，钻柱由于弯曲变形与套管壁产生磨损，严重地降低其使用寿命。

This article introduces an easy way of deep machining and puts forward taking use of normal machine tool,simplifying craft installment,improving twist drill and connection types of drill stem by analyzing many influent factors on deep machining,which include discharging scrap,wear and tear,radiating and orientation.

本文介绍了一种简便的深孔加工方法，通过对深孔加工中排屑、磨损、散热和导向等诸多因素的分析，提出了利用普通机床，简易工装，改进麻花钻及钻杆的连接形式，在实践使用中取得了较好的效果。

Check, repair or replace the worn parts and components, such as bearing pedestal and drive shaft.

检查、修理或更换磨损的零件和部件，如：轴承座、传动轴等。

A threadbare patch of Brussels carpet covered the centre of the room, and formed an oasis of roses and lilies upon a desert of faded green drugget.

一方磨损的布鲁塞尔毛圈地毯铺在房间的中央，成为一大片退色粗毛绿地毯的沙漠里的一块玫瑰与百合的绿洲。

Nano-imprint lithography drum skin abrasion or drop, causing the paper punches-drum so that the poor contact dot untrue.

压印滚筒磨损或掉皮，造成压印滚筒与纸张接触不良，使得网点不实。

The plan is deigned in raise control levels and automatic .It is studied that is equipment parameter of, temperature, pressure, oxygen content and dustiness, monitor and control technology is realized, Secure and reliance.

同时对污泥的脱水率、出料速度和干化温度、干化时间的最佳匹配控制技术；设备的抗腐蚀、磨损技术进行了研究。

LinYun didn't put the eardrop, because want to sell WangJia, he took up by selling products, and the other by a necklace of yi said: I'm not a jade jade store rarity, these are treasures, you look at this necklace, this necklace is a section of a day, connect every section is a hollow jewels, connect the rope is a very special metal alloy manufacture, very soft and strong, strong than generally strong steel, but they won't cause of jade wear and beautiful not?

林云也不想把这个耳坠卖掉，因为要送给王佳，他趁机推销起其他精品，指着旁边的一根项链说道：我的怡玉玉器店不只一件珍品，这些都是珍品，大家看这条项链，这条项链是一节一节连起来的，每隔一节都是一根中空的美玉，连接的绳索是一种非常独特的贵金属合金制作出来的，非常的软而且结实，结实程度比一般钢丝还要强，但是却不会对玉石造成磨损，而且很漂亮不是吗？

Choose your earring accoding to what you are wearing and wear you are going.

选择你的耳环accoding你怎么穿着磨损你要去。

This paper analyses existing problems and retrofit of low temperature economizer in No.

针对永济热电厂某锅炉低温级省煤器存在的问题，介绍了采用螺旋肋片式省煤器进行改造以减轻磨损状况的方

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。