Table for the hydraulic control longitudinalmovement.
工作台纵向移动为液压控制。
2
It is necessary to study shipping longitudinalmovement and realize effective control.
研究船舶纵向运动从而实现有效控制是非常必要的。
3
This invention discloses a sewing machine having stem to be driven to perform longitudinalmovement; wherein the stem can be fixed with sewing needle for guiding threads.