名词
中文翻译：手控信号盒
同义词：
['hand-held control box', 'hand-operated control box']
例句：
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1. The engineer used a handcontrol signal box to monitor the system's performance.
工程师使用手控信号盒来监控系统的性能。
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2. The technician had tooperate the hand control signal box manually.
技术人员必须手动操作手控信号盒。
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3. Thehand control signal box was designed for easyaccess and operation.
手控信号盒设计为易于访问和操作。