短语词组短语illuminated pushbutton 带灯按钮pushbutton control 按钮控制chronoscope pushbutton 计时器按钮switch pushbutton 按扭式开关break pushbutton 载波切断按钮stop pushbutton 停止按钮button pushbutton 按钮car pushbutton 轿厢按钮vigilance pushbutton 警戒按扣 返回 pushbutton