| 1. | Knoop hardness test - verification of testing machines 努普硬度试验.试验机的验证 |
| 2. | Metallic materials - knoop hardness test - part 1 : test method 金属材料.努普硬度试验.第1部分:试验方法 |
| 3. | Knoop hardness test - test method 努普硬度试验.试验方法 |
| 4. | Standard test method for knoop indentation hardness of advanced ceramics 高级陶瓷的努普压痕硬度的标准试验方法 |
| 5. | Knoop hardness penetrator 努普硬度压头 |
| 6. | Knoop hardness number 努普硬度值 |
| 7. | Methods of test for paints - determination of knoop hardness by measurement of the indentation depth 涂料的试验方法.用压痕深度测量法测定努普硬度 |
| 8. | Methods of test for paints - determination of knoop hardness by measurement of the indentation length using a microscope 涂料的试验方法.用显微镜观测压痕长度法测定努普硬度 |