言行相顾的意思机械类毕业设计外文翻译范文

2021年1月19日发(作者：卫景濂)




文翻译





2020
年
4
月
19
日

1

机械类毕业设计外
文档仅供参考

、



毕业设计（论文）外








译文题目：

轴承的摩擦与润滑






10
月
15
日


外文文献原文：


Friction , Lubrication of Bearing

In many of the problem thus far , the student has been asked to disregard or neglect
friction . Actually , friction is present to some degree whenever two parts are in contact and
move on each other
. The term friction refers to the resistance of two or more parts to
movement.

Friction is harmful or valuable depending upon where it occurs. friction is necessary for
fastening devices such as screws and rivets which depend upon friction to hold the fastener and
2020
年
4
月
19
日

2