multilevel

1.a multilevel parking garage.

一个多层停车库

2.Designed a set of electro-hydraulic proportional system of forming hydraulic press of heteropolarity multilevel magnetic ring, established the mathematical model of the top plunger cylinder.

3.设计了极异方型多级磁环成形液压机电液比例控制系统,建立了模缸数学模型。