- gear-wheel rockweel tester
- 齿轮: cogwheel; gear wheel wheel-l ...
- 洛氏硬度计: Rockwell apparatus; Rockwell ...
- 洛氏硬度计: hr-150a; hrs-150; rockwell hardness meter; rockwell hardness tester, rockwell hardometer, rockwell apparatus; rockwell hardometer
- 便携式洛氏硬度计: portable rockwell hardness tester
- 表面洛氏硬度计: rockwell superficial hardness tester; superficial rockwell hardness tester
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