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| supersonic crack detector; supersonic flaw detector; ultrasonic flaw detector; ultrasonoscope | |||
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| ultrasonic crack 【flaw】 detector (【技】利用工件正常组织与缺陷组织的声学性能差别，引起对超声波传播的影响检查工件的仪器。具有设备简单、灵敏度高、操作安全、对环境无污染等优点。适用于钢铁等金属材料的无损检测。) | |||
| 超声波无损检测仪: 2 phrases in 1 subject |
| Metallurgy | 2 |
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