您要查找的是不是：
- 硬度HB;hardness was HB;
- 硬度hardness
- 硬度计sclerometer
- 布氏硬度brinell hardness
- 洛氏硬度rockwell hardness
- 维氏硬度vickers hardness
- 洛氏硬度计Rockwell apparatus
- 高硬度high hardness
- 莫氏硬度Mohs hardness
- 布氏硬度计brinell's machine
- 表面硬度case hardness
- 总硬度total hardness
- 维氏硬度计Vickers hardness tester
- 显微硬度microhardness
- 回跳硬度scleroscope hardness
- 硬石，金刚石一种曾被认为在硬度上不可穿透的石头A stone once believed to be impenetrable in its hardness.
- Ｘ射线硬度X-ray hardness
- 巴氏硬度Barcol hardness
- 摆测硬度pendulum hardness
- 粘土的硬度temper of the clay
