A non-wrinkling limited graph for spherical surface parts of retiary metal sheet and metal sheet is obtained.

通过模拟得到了带网和无形球面件时不起皱形极限与厚关系曲线。

Bench of closed circuit cooling tower that is composed of boiler ,exchanger, orifice flowmeter, water pump, micromanometer , heat indicator and so on is established.

建立了由锅炉、换热器、、水泵、微压、温度等仪器设备组封闭式冷却塔实验台。