[物]
magnetic thickness gauge
... magnetic test coil 检测线圈，探测线圈 magnetic thickness gauge 磁测厚计 magnetic time relay 磁延时继电器 ...
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短语
电磁测厚计
electromagnetic thickness gauge
舒氏磁性测厚计
Schuster gage
磁力式厚度测量计
Magnetic coating thickness gauges
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