The energy absorptivity and hardness of knife surface are obviously increased using graphite coating during laser thermal treatment for high speed steel knife.
采用石墨涂层，对高速钢刀片进行了激光热处理，显著地提高了刀片表面的能量吸收率和硬度。
2
The effect of cover treatment with PVC on the absorptivity, filament strength and surface state of the noil ramie is studied in the paper.
本文研究了PVC包覆处理对苎麻落麻纤维的吸水性、纤维表面状态、纤维单丝强度等的影响。
3
It can be chosen when the absorptivity rate of surface coat to laser power reaches 30%, and it is not necessary to pursue high absorptivity rate.