英语语法分析

A variety of cycloids are available through analytic computation.

通过解析计算可得到多种型线。

Workable cycloids can be designed at will and without analytic computation.

也可不用任何解析计算，随意地设计出理论上可行的型线。

By the use of the computer auxilliary design, the rotor's cycloids of Roots (Rhodes) vacuum pumps are designed.

利用计算机辅助设计罗茨真空泵转子型线。