Market demand is our research and development direction.

市场的需求是我们科研开发的方向。

Virtual reference service is the development direction of academic library.

虚拟参考服务是图书馆参考咨询工作的发展趋势。

The development direction of Chinese university student's football games is made.

第六部分，我国大学生足球运动的发展趋势。

The future development direction of diesel railcar transmission system is pointed out.

指出了今后内燃动车传动系统的开发方向。

Finally the authors prospect the development direction of feed system in high-speed machining.

最后展望了高速加工中进给系统的发展前景。