Affected by electromagnetism and structure, the rotor shaft of big lengthtodiameterratio high power density asynchronous motor shows low intensity and bad rigidity.
大长径比高功率密度电机受电磁及结构因素的影响，转轴的强度低，钢度差。
2
The sealing property problem for the stirring shaft of high-speed pressured reaction axe with large lengthtodiameterratio is always a difficult problem to study for designers and users.
高速大长径比压力反应釜搅拌轴密封性能问题一直是设计者与使用者研究的难题。
3
This makes them incredibly strong and incredibly light, and they've already been manufactured in strands with a length-to-diameterratio of 132 million to one.