Remote file manipulation is an important content of remote control system.
远程文件操作是远程控制系统的重要内容。
Button switch: operation right spirit, a string manipulation and wireless remote control two ways.
按钮开关：手操作轻巧灵便，分有绳操纵和无线遥控两种方式。
Button switch: operation right spirit, a string manipulation and wireless remote control two ways.
按钮开关：手操作轻巧灵便，分有绳操纵和无线遥控两种方式。
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