For the equations course, I was given a setof unpublished lectures that emphasized existence proofs and uniqueness of solutions to differential equations.
在方程课上，我听了一系列未公开的演讲，强调的是微分方程的解的存在证明及其唯一性。
2
Also this paper presents the structure of mathematical vessel-model and the existence and uniquenessof the solution and introduces a set of numerical methods to solve the smoothed-spline Surface.
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。
3
The properties that make up an entity key should be chosen to guarantee uniquenessof instances in an entity set.