He also proposed and discussed the problem of isoperimetric figures.
他还提出并讨论过等周问题。
2
The isoperimetric problem is one of the basic differential geometric problems.
平面上等周问题是微分几何的基本问题之一。
3
Isoperimetric number is one of the crucial parameters of interconnection networks closely related to the connectivity and parameters, such as bisection width of graphs.