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.

youdao

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.

youdao