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我们中的大多数不能分辨正切余切。Most of us can’t tell our secant from our cotangent.

它实际上代表了辙叉角的余切值。It actually represents the Frog Kok of Cotangent value.

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通过两者比值形成的正切或余切值计算细分数,从而实现再细分。On the basis, more subdivision is realized by tangent and cotangent digital value.

通过新提出的余切关系定理,解决了单站纯方位观测的非线性问题。A new cotangent theorem is deduced to solve the nonlinearity for bearing-only measurement.

本文研究了李群的余切丛上的辛群胚结构。In this paper, we study the symplectic groupoids structure on the cotangent bundle of Lie group.

根据所提出的余切关系定理,实现了纯方位观测的直线运动目标跟踪。According to the author's Cotangent relations theorem, bearings-only target tracking with linear motion is achieved.

借助集值映射的余切上图导数,给出了集值优化问题取得极小解和严格极小解的充分条件。With contingent epiderivative of set-valued mapping, we gain the sufficient conditions of minimal solution and strict minimal solution of set-valued optimization problem.

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借助目标函数的导数、约束映射的余切导数及拉格朗日映射给出了值映射的余切上图导数的两个表示。Two representations of contingent epiderivative of the value map is given in terms of the derivative of the objective function, the contingent derivative of the constraint.

借助目标函数的导数和约束映射的余切导数,给出了值映射的余切上图导数的一个表示。A representation of contingent epiderivative of the value map is given in terms of the derivative of the objective function and the contingent derivative of the constraint map.

从理论和实践两个方面较为系统地阐述了旋转变压器峰值采样正余切轴角编码方案及其工程设计原理。From two aspects of theory and practice, this article more systematically expounded the peak sample transformer rotating shaft cotangent coding scheme and its engineering design principles.