1) hardness difference between surface and core
表心硬度差
2) hardness difference
硬度差
1.
Based on the simulated test on TIMKEN friction-wear testing machine and the practical test on transmission testing table, the paper systematically deals with the transmission of steel worm-gearing with three kinds of hardness difference of tooth face and copper worm-gearing.
通过在MHK—500型TIMKEN试验机上进行的模拟试验和开式蜗轮蜗杆试验台上的台架试验,对三种不同硬度差的钢蜗轮传动以及铜蜗轮传动进行了深入系统的试验研究,分析了齿面硬度差对钢蜗轮传动性能的影响。
3) nonhomogeneous hardness
硬度差异
4) surface hardness
表面硬度
1.
The study of tribological properties of carbon/carbon composites with different surface hardness;
炭/炭刹车副表面硬度对摩擦磨损性能的影响
2.
Influence of surface hardener on surface hardness and abrasion resistance of dental stone;
石膏表面硬化剂对超硬石膏模型表面硬度和抗磨损性的影响
3.
Influence of Electric Field on Material Surface Hardness;
电场对材料表面硬度的影响
6) skin hardness
表皮硬度
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