查询词典 hyperbolic line

We transformed eccentric coaxial line cross-section into rectangular area by hyperbolic cotangent transformation, transformed the FDTD difference expressions into CM-FDTD difference formula, calculated the cutoff wavenumbers of higher order TE and TM modes in eccentric coaxial line.

本文用双曲余切变换将偏心同轴线截面变换为矩形区域，相应地将FDTD差分格式变换为保角变换FDTD差分格式，计算了偏心同轴线TE、TM高阶模的截止波长。

The hyperbolic variable sections viaduct piers are applied in new Wuhan station of Wuhan-Guangzhou passenger dedicated line,which can break through traditional theory about plane fair-faced concrete in architectural design as to get decorative effects combined with fair-faced concrete of beam making one integrated mass.

武广客运专线新建武汉站站房高架桥桥墩设计为双曲变截面，在建筑外观设计中突破了传统的平面饰面清水混凝土设计理念，而突显双曲面的饰面清水效果，以达到与梁体饰面清水混凝土浑然一体的装饰效果。

This guidance law avoids the chattering of line-of-sight angular rate of attack missile by introducing the hyperbolic tangent function .

该导引律设计主要通过引入双曲正切函数，消除了攻击导弹的视线倾角增量变化律的抖动现象。

However, some properties of laser beams limit its further application. For example, its intensity distribution is Gaussian profile, not uniform one. And propagation path is hyperbolic line, not straight line.

激光束的光强呈高斯分布而不是均匀分布，它的传播路径是双曲线而不是直线，这些特性在某种程度上限制了它的应用。

By contrast, it is proved more superior that the spline curve is used to match hyperbolic line instead of arc, and the problem about drawing of hex nut is solved in AutoCAD which was adopted in textbook of engineering drawings.

解决了工程制图中螺母近似画法在AutoCAD中应用时出现多线相交的问题，从而可以在符合实物投影的基础上形成一个比较好的统一改进近似画法规范。

A new one dimensional optical orthogonal codes(1 D OOC) named extended hyperbolic line congruence codes is constructed,and its performance is analyzed.

构造了一种扩展的双曲线性同余码并分析了其码字性能。

Using the characteristic line theory of hyperbolic partial differential equations,relations between the reflected signals and the dielectric parameters of the stratified media are analyzed.

提要 本文根据双曲型偏微分方程的特征线理论分析了分层媒质参数与时域反射信号的因果关系，研究了基于时域反射数据的分层媒质的参数反演的离散化模型。

The similar drawing of the hyperbolic line is argument according to my experience with teaching, which is on the head surfaces of hex nut and used in the engineering drawings, through building three-dimensional model in AutoCAD.

本文通过在AutoCAD中建立三维虚拟对比模型，探讨了工程图样中六角螺母和六角螺栓头部外表面双曲线在计算机辅助设计中的近似画法问题。通过对比，论证了样条曲线替代圆弧近似双曲线改进画法在计算机绘图中的合理性和优越性。

Optical orthogonal codes; Optical code division multiple access; Prime sequences ; Hyperbolic line congruence code

光码分多址；二维光正交码；素数码；双曲线性同余码

On the basis of variation characteristics of ship speed error model, a ship speed regulator using the on-line adaptive error model is proposed in this paper. The control scheme is based on back propagation multi-layer perceptrons adaptive neural network in which a modified hyperbolic tangent function is used as the activation function of an auto-tuning neuron and is updated by the steepest descent method.

在分析船舶航速误差模型变化特性的基础上，应用激励函数的自适应神经网络和最陡下降法的非线性优化技术，提出了自适应学习误差模型控制方法，应用于船舶柴油机调速器控制系统。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。