In this paper, minimum weight design of a hatch cover of box cross section is made by geometric programming. The analytic optimal solution is obtained.
本文采用几何规划方法对船舶的箱形剖面舱口盖进行最小重量设计，求得了解析的最优解。
Based on the analytic formula of groundwater inflow into tunnel, this paper puts forward a method to choose the minimal rock cover of sub-sea tunnel.
基于隧道涌水量解析公式，从隧道涌水量的角度出发考虑确定海底隧道的最小岩石覆盖厚度。
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