All these measure along with propagation analysis of constraints established the theory and quick solution of geometric constraint engine.
通过约束传播分析，为几何约束求解引擎的实现提供了理论依据和快速算法。
ACIS is a prominent 3d modeling engine, which integrating wireframe, surface, and solid modeling in itself, supplies a geometric modeling platform for different 3d modeling applications.
ACIS是一种三维几何造型引擎，它集线框、曲面和实体造型于一体，为各种3d造型应用的开发提供了几何造型平台。
Further discussions on the effect of the geometric condition of the vessel-pipe boundary on the engine performance were made.
文中还对容器边界几何状况对于柴油机性能参数的影响进行了讨论。
The present paper introduces the optimized design of valve springs of the internal-combustion engine by the duality method of the geometric programming with the positive term equations of constraint.
本文对内燃机汽门弹簧进行优化设计，采用了约束正定式几何规划对偶法。
The present paper introduces the optimized design of valve springs of the internal-combustion engine by the duality method of the geometric programming with the positive term equations of constraint.
本文对内燃机汽门弹簧进行优化设计，采用了约束正定式几何规划对偶法。
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