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| 摆式硬度试验机 | |||
| 摆测硬度试验仪 | |||
| 摆杆硬度试验机; 摆杆硬度计 | |||
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pendulum hardness tester : 4 phrases in 2 subjects |
| Metallurgy | 1 |
| Technology | 3 |
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