A dual variable-diameter wheel pumping unit, which has long stroke and low pumping speed and large load capacity, is designed based on conventional beam pumping units.
双变径轮式抽油机是在继承常规游梁式抽油机优点的基础上设计而成的大载荷、长冲程、低冲次节能型抽油机。
The dual variable FEM formulation can avoid the difficulty of C1 continuity condition.
对偶变量有限元推导可避免所谓的C1连续性问题。
The improvement to the method of variable combination makes the problem of dual variable separation in geometric programming with a multi difficulty degree simple and easy to solve.
对变量组合法进行了改进，使多困难度几何规划中对偶变量分离问题简单易解。
This article concerns the shadow cost concept and discusses the relationship between shadow cost and dual price according to linear programmings economic meaning of dual variable and shadow price.
本文根据线性规划问题对偶变量和影子价格的经济意义，给出了影子成本的概念，讨论了影子成本与对偶价格的关系。
This article concerns the shadow cost concept and discusses the relationship between shadow cost and dual price according to linear programmings economic meaning of dual variable and shadow price.
本文根据线性规划问题对偶变量和影子价格的经济意义，给出了影子成本的概念，讨论了影子成本与对偶价格的关系。
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