查询词典 contravariant

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。

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。

To manage charging of battery charger through controlling light battery, contravariant output and electricity incorporation

控制光伏电池对蓄电池的充电管理；逆变输出与市电同步并网。

The fundamental equations are the momentum equations of contravariant velocities as unknown variables and the Poisson equation of the pressure correction.

基本方程是以逆变速度为未知变量的动量方程和关于压力修正量的Poisson方程。

The contravariant device is based on sinusoidal pulse width modulation technology.

汽车空调蒸发风机与专用逆变器系统是机电一体化产品。

The present paper proposed one kind of numerical control single-phase inversion structure, in detail elaborated the system parameter design, the rectification work basic principle of work, the contravariant basic principle and the SPWM sine pulse width modulation.

本论文提出了一种数字控制的单相逆变器结构，详细论述了系统的参数设计，整流工作的基本工作原理，逆变的基本原理及SPWM正弦脉冲宽度调制。

In these boundaries, the contravariant velocity components normal to the boundary are constrained by mass conservation, and for other velocity components and turbulent quantities, the second derivatives are set to zero.

在这些界限， contravariant速度组分正常对界限由许多保护压抑，并且为其他速度组分和动荡数量，第二种衍生物调整到零。

In the present ap-proach, the Cartesian components of the velocity are kept as the dependent variables, since the choice of the covariant or the contravariant velocity components would lead to a much more complex set of equations.

在当前方法，因为协变量的选择或contravariant速度组分将导致等式，复杂的形势速度的解析的组分被保留作为因变量。

The contravariant welding machine main circuit system by the input filter leveling circuit, the contravariant electric circuit, the high-frequency transformer, the output rectification filter circuit is composed.

主电路系统由输入滤波整流电路、逆变电路、高频变压器、输出整流滤波电路组成。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。