可靠性分配的关键在于要确定一定的准则及相应的方法，通过它能得到全部的可靠性分配值或有限个数值解。
Key point of reliability distribution is to define a certain criterion and relevant method, through them, the designers can get all of reliability distribution value and limited digital solution.
最近20年，对这些问题的提法逐渐完善，解的存在性和数值方法方面已取得了许多重要进展。
The formulation for these problems has been perfected gradually, and there have been important advances in the existence of a solution and the numerical methods of these problems in the last 20 years.
探索和研究了数学船型构造及解的存在、唯一性，且建立了一套求光顺样条曲面的数值方法。
Also this paper presents the structure of mathematical vessel-model and the existence and uniqueness of the solution and introduces a set of numerical methods to solve the smoothed-spline Surface.
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