Remove scale, in the process of assembly parts surface oil, in case of rust.

去掉氧化皮，装配过程中零件表面涂上油，以防锈蚀。

youdao

The detection theory of parts surface disfigurement based on the embed image processing system is introduced.

介绍了嵌入式图像处理系统用于零件表面缺陷检测的原理。

youdao

Product parts located by fixture surface, which milled according to parts surface CAD data, and then coated by PU, to prevent the parts surface from being scratched.

样件以胎模定位，胎模表面根据本体CAD数据加工，表面倒PU胶，保证不划伤本体表面。

youdao

The material also contains negatively charged ions, which can be moved with electric pulses to different parts of the surface.

FORBES: Connect

Mercury is the closest planet to the Sun, and parts of its surface can reach temperatures of 800 degrees Fahrenheit.

FORBES: NASA Has Discovered Water Ice On Mercury

However, because Mercury has virtually no tilt to its axis, there are actually parts of the surface that never see sunlight at all.

FORBES: NASA Has Discovered Water Ice On Mercury