1.
Both the derrick deviation and the wellheads eccentricity will cause the serious wearing of the casing (or casing protecting tube) close to the wellhead.
井架不正或井口偏心，会造成近井口套管（或套管防磨套）的磨损。
2.
Measures taken to prevent abrasion of the plunger in cylinder sleeve of a cryopump and to improve sealing performance
低温泵缸套柱塞防磨损和提高密封性的措施
3.
Study on formation and precaution of grinding thermal damage to bearing rings
轴承套圈磨削热损伤的形成与预防探讨
4.
Cause Analysis to Roll Sleeve Fracture of ZGM-113K Roller Type Medium Speed Disk Coal Mill and its Precaution
ZGM-113K辊式中速磨煤机辊套断裂原因分析及预防
5.
Not-slip lace: Not damaged unnecessarily by friction with the upper and tight the shape of the shoe while walking.
防滑鞋带:可以避免不必的鞋面磨损,行走时能套牢鞋子的形状.
6.
The Application of High Temperature Wear and Corrosion Protection Coating Technology in Thermocouple Cannula
高温耐磨蚀涂层防护技术在热电偶保护套管上的应用
7.
CNC internal grinding machine for bearing ring
数控轴承套圈内圆磨床
8.
interchangeable groundglass joints
配套的玻璃磨口插头
9.
It is advisable to fit all the ground glass joints with polytetrafluroethylene sleeves to prevent their sticking together.
最好把所有的磨光玻璃接头都装上聚四氟乙稀套管，以防止它们粘在一起。
10.
Or a knife set and a sharpener. Sharpening's very important.
或者是那套厨刀和磨刀石。磨刀很重要的。
11.
EXPERIMENTAL STUDY OF ABRASIVE-CORROSIVE WEAR OF MUD PUMP LINER
钻井泵缸套材料磨料—腐蚀磨损实验研究
12.
The effect of casing abrasion and cement sheath's defect position on casing stress
套管磨损与水泥环缺陷位置对套管应力的影响
13.
bind the edge of a carpet,ie to prevent fraying
给地毯包边（防止磨损）.
14.
preshrunk brushed denim
色织防缩磨毛劳动布
15.
The bonded warehouse is flooring with carborundum which is wearable, dustproof, and anti-statics.
仓库地面采用耐磨金刚砂，耐磨、防尘、防静电。
16.
Review on the Integrated Anti-abrasion of Circular Fluidized Bed Incinerator's Anti-abrasive Bent Tile
循环流化床锅炉防磨槽瓦鳍片综合防磨探讨
17.
biohazard glove
防生物（学）危害手套
18.
fire tool cache
配套贮芷的消防工具