The automatic lubricating system ensures machine precision and protongs service life. 自动润滑系统，确保机器精密度和使用寿命。
The driving mechanism is totally enclosed in the machi-ne boby and its lubrication system improves the lifetime of the mechanical components. 机械传动系统全部封闭在机体内，并附有自动润滑系统，提高了机件的寿命。
