SCM control motor rotation speed can be adjusted via buttons and rotational direction, while on the tube through infrared measurement of motor speed and in the 1602 LCD screen display.是什么意思_SCM control motor rotation speed can be adjusted via buttons and rotational direction, while on the tube through infrared measurement of motor speed and in the 1602 LCD screen display.在線翻譯_英語_讀音_用法_例句