“handheld digital ultrasonic flaw detector”的概念、定义、翻译、参考文献-科学参考

单词	handheld digital ultrasonic flaw detector
释义	handheld digital ultrasonic flaw detector Encyclopedia 工学[声学检测仪器与设备]释 handheld digital ultrasonic flaw detector掌上式数字超声波探伤仪重量轻、体积小，可放置于手掌上操作的数字式超声波检测仪器。
随便看	principal minor determinant principal module principal moment principal moment of inertia principal net of a mapping principal net of the flow principal neutral point principal nilpotent orbit principal norm principal normal principal normal complex principal normal form principal normal line principal normal plane principal normal section principal normal surface principal normal vector principal number principal nutation principal object principal offender principal of land laws principal of least dissipation of energy principal open set principal optical axis

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