| 1. | Silicon is a hard, brittle material registering 72. 6 on the rockwell "a" hardness scale .
硅是硬而脆的材料，根据Rockwell“A”硬度分度测值为726。 |
| 2. | A hardmetals - rockwell hardness scale a test method
硬质合金洛氏硬度 |
| 3. | C a steel bonded tungsten carbides - determination of rockwell hardness scales c and a
碳化钨钢结硬质合金洛氏硬度 |
| 4. | Mohs hardness scale
莫氏硬度标 |
| 5. | Silicon is a hard , brittle material registering 72 . 6 on the rockwell " a " hardness scale
硅是硬而脆的材料，根据rockwell “ a ”硬度分度测值为72 6 。 |
| 6. | Calculation of hardness scale for elements on density functional theory with generalized local density approximation and modified slater transition - state
以密度泛函论与局域近似法及改进过渡态计算软硬度 |
| 7. | Wearing while it s true that gemstones such as ruby and sapphire are second only to diamond on the hardness scale , it is not a measurement of their indestructibility
钻石的物理特性较稳定，可用沸水清洗，但一些宝石如绿宝石紫水晶均非常脆弱，易受温度剧变的影响，应尽量避免使用沸水。 |
