The steady temperature field in irregular plane domain with radiation heat exchange boundary is analyzed by the boundary discrete method, and the solution in form of series is obtained.

采用边界离散方法对具有辐射换热边界的平面非规则域内稳态温度场进行了分析，得到了级数形式的解。

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The complex variable method analytic solution of stress is given for the plane elastic stress problem of surrounding rock of shallow circular tunnel under ground load.

采用复变函数解法，研究地面荷载作用下浅埋圆形隧道围岩的平面弹性应力问题。

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Bones, muscles, joints, the basic solution of plane structure.

骨骼，肌肉，关节基本解刨结构。

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Mr Clarke's solution: customers booking a flight should be told more than the ticket price and the type of plane used on a route.

BBC: smokestack in Beijing