contravariant

SIMPLE algorithm with non-staggered gird in the body-fitted curvilinear coordinate system is proposed. The pressure oscillation which can't be tested by continuity equation is prevented by means of a special averaging procedure of contravariant velocity components on control volume faces.

提出了在贴体坐标系中非交错网格的SIMPLE算法，通过对控制界面上的逆变速度分量作特殊加权平均处理，可避免在非交错网格中产生压力波动而连续性方程又无法检测出来的问题。

In the method the unknown fault signal space was mapped to known sine function space using topology contravariant map, the purpose of studying the unknown space was proposed through studying known space.

该方法把未知的机械故障信号空间通过拓扑反变映射映射到已知的非平稳正弦函数空间，通过研究已知空间的性质达到研究未知空间性质的目的。

For detecting the vibration frequency the dynamic systems, and using topology contravariant functor the unknown space was mapped to known space, the vibration frequency of unknown space will be investigated by the contravariant functor.

为了分析动力系统振动频率的瞬变性，采用拓扑反变的理论把未知的动力系统空间映射到已知的空间中，通过拓扑反变算子研究未知的空间频率的瞬变性。

Notes on the Bra Vector and Ket Vector, Reciprocal Basis Vectors and Reciprocal Vectors, Covariant Vectors and Contravariant Vectors

关于左矢、右矢和相伴基矢、相伴矢量以及协变矢量、逆变矢量的几点注记

Finally this article has produced the entire contravariant controller hardware design and the software design.

最后本文给出了整个逆变控制器的硬件设计和软件设计.

Every vector can be resolved into covariant or into contravariant components.

每个矢量都可以分解成协变分量或逆变分量.