A lot of Ph.D. students get depressed when they reach the boundary, because there's no longer a test to cram for or a procedure to follow.

很多博士生在达到边界的时候都很沮丧，因为他们从未被一项考验占据如此多的精力，或者从未坚持一个如此艰难漫长的过程。

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The procedure for solving the first boundary condition of passive rectangular metal trough potential distribution .

本程序求解第一类边界条件下无源矩形金属槽电位分布。

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During the searching procedure the objective point is moved along a broken line on the boundary of the constraint polyhedron.

在搜索过程中，目标点沿约束多面体边界上的一条折线移动。

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