The sawing speed curve is unchangeable, but the feed speed curve can be different with different lengthratio of members of the feeding mechanism.
锯切速度曲线是不可变的，但进给速度曲线随进给机构杆长比的不同而变化。
2
The question about the seals of high speed churn shaft with large ratio of length to diameter is one of the difficult problems.
高速大长径比搅拌轴密封可靠性问题，一直是从事密封工作者探索的问题之一。
3
To avoid the most dangerous resonance, the first vertical frequency of the bridge should be greater than the ratio of the maximum vehicle speed to the vehicle length in design.