查询词典 converse theorem

In this paper a new proof of Tehebyeheff theorem in several variables has been given.

在这篇文章中我們給出了多元逼近的定理一个新的証明。

This paper introduces the proof and application of Cauchy mean-value theorem from many angles.

本文多角度介绍了柯西中值定理的证明方法和应用。

This paper introduces the proof and application of Cauchy mean-value theorem from many angles in every aspect.

本文介绍了柯西中值定理的多种证明方法及其应用。

The comb device adopt activity releasing theorem, which achieves the compose needle to pick up yarn or release yarn. The comb with clip and cutter is complement to each other, both to cooperate with each other. Which give full pay completely due action and reduce the waste yarn and increase the production efficiency.

起底板装置采用活动释放原理，使封闭的复合针有效实现其挂纱及脱纱功能，而纱夹纱剪装置与起底板装置是相辅相成的，两者相互配合工作，才能完全发挥其应有的作用，有效减少了纱线的浪费，提高生产效率。

The existence and convergence theorem of Newton method and quasi Newton method solving nonlinear equation with parameters F = 0 is obtained under point estimates and weak conditions.

在点估计条件下给出用Newton法及拟Newton法求解带参数非线性方程F = 0解的存在性定理和收敛性定理，以及误差估计。

To solve the exsisting problems in the realization of the LFM/CW radar, the thesis presents a technique for dynamically measuring the LFM/CW signals, which can accomplish the dynamic measurements of FM linearity, FM bandwidth and FM slop of the transmitted signals of LFM/CW radars. This technique creates an effective and accurate means of judging the performance of LFMCW radars. The linearity-correction techniques presented in the thesis successfully make the linearity of the transmitted signals of an actual LFM/CW radar reduce from approximately 25% to 0. 1%(or r. m. s linearity of 0.04%), better than the best results (0.22%) obtained by foreign researchers with complex linearization closed-loop in the same kind of LFM/CW radars, according to the published literatures during the last decade. In order to improve the capability of the real-time processing and range-cells management of LFM/CW radars, the principle of equivalent mixing by lacking-sampling process of band-pass real signals is proposed based on the well-proved improvedversion of sampling theorem of band-pass real signals. This principle is used to configure the range-segments processing of the beat signals of an actual LFM/CW radar. The techniques of system-background interference suppression and the beat signal's dynamic range suppression are proposed, and are realized in an actual LFM/CW radar to demonstrate their effectiveness.

针对线性调频连续波雷达实现中急待解决的技术问题，文中提出并验证了线性调频连续波信号的综合动态测试技术，可以完成对线性调频连续波雷达发射信号的扫频线性度、扫频带宽和扫频斜率的综合动态测试，为衡量实际线性调频连续波雷达的系统性能创立了精确有效的测试手段；文中建立的非实时闭环动态校正技术使一部实际的线性调频连续波雷达的发射信号（时带积3×10〓）的扫频线性度从25%改善为0.1%（方均根线性度0.04%），优于国外已公布的80年代同类雷达中采用复杂的实时闭环动态校正环路所获得的实际结果（0.22%）；为了改善线性调频连续波雷达的实时性和分辨单元数处理能力，文中发展完善了实带通信号的采样定理并给予了严格证明，并在此基础上提出了欠采样等效混频原理，将其应用于实际线性调频连续波雷达的距离分段处理中；针对线性调频连续波雷达中系统背景干扰和回波动态范围问题，创立了系统背景综合抑制技术和频域动态范围压缩技术，并将它应用于实孔线性调频连续波雷达系统中，显示出它们的有效性。

Using this theorem, we proved the existence of traveling wave solutions in cooperative Lotka-Voterra system with stage structure.

本文用这个存在性定理证明了带时滞分年龄段的Lotka-Volterra模型的两个平衡点之间行波解的存在性。

Then it expatiates two-row harvester's working theorem and procedure in detail. Besides that, the design of lifting, scroll and support mechanism are also the key parts.

我国现阶段甘蔗的收割还是主要以手工为主，即使用到的甘蔗收割机在结构和性能上也不完善。

Based on this theorem, a new design method can be used not only in the SISO's BDNS, but in the MIMO's square matrix BDNS (numbers of input equal ones of output). The equations of motion of a missile are a three-square matrix BDNS . Then, it is naturally to design a flight control system by BDC method.

在此定理的基础上，又提出了BDNS的块对角控制器（Block Diagonal Controller-下文简称BDC）设计方法，这种方法不仅适用于单输入单输出BDNS，而且对于多输入多输出的方阵BDNS也同样适用。

Firstly in§2.1, by applying the fixed point theorem the existence of positive solutions for second-order three-point boundary value problem is discussed.

第二节，运用不动点定理研究四阶两点边值问题正解的存在性。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"