无线识别装置
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Wireless Motion Detector Sensor 无线移动探测器传感器
WIRELESS MOTION DETECTOR 无线探测器
Wireless-controlled Detector 无线电控制仪
High pressure wireless phase detector 高压无线核相仪
·2,447,543篇论文数据，部分数据来源于NoteExpress
The oldest ancestor of the point-contact transistor was the crystal detector, used in early wireless sets.
ECONOMIST: The middle age of the transistor
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