查询词典 Darwinian theory

In the course, the mathematics basic concept, basic theory, and basic compute method about continuous variable are introduced systematically.

通过本课程的学习，使学生获得有关连续变量的数学基本概念、基本理论和基本运算方法，在传授知识的同时，要通过各个教学环节逐步培养学生具有抽象思维能力、逻辑推理能力、空间想象能力和自学能力，还要特别注意培养学生具有比较熟练的运算能力和综合运用所学知识去分析问题和解决问题的能力。

This is the basic theory of international trade.

这是国际贸易的基本理论。

The results show that, this theory is basically suit for China's capital market.

结果表明，本文中所提出的理论是基本适合我国资本市场的。

The establishment of membership function is the basie and critical key in its application, theory and practice.

隶属函数的确立，是模糊数学及其应用在理论上和实践中的基本和关键问题。

According to jacket structure feature and load features, the paper infers basie theory and proposes a execution process of how to analyze local construction s to meet the ANSYS program load input requirements.

在绥中36-1、文昌13-1/13-2、东方1-1等油气田导管架的吊点、管节点、裙桩套筒等典型局部构造的设计中，我们利用大型有限元分析程序ANSYS 5.6对这些关键部位的构造特性进行了分析，对这些结构的设计提出了改进建议，并在此基础上总结出一套适用于这些典型局部构造的有限元分析实施方法，以指导今后的导管架局部构造分析工作。

Basing on the upward point, the research brings forward the eight kinds of measures of the standardized management of the contract farming: first, making standard contract, perfecting the program of signing; second, applying double theory etc, forming the benefits mechanism of the contract farming; third, facing the market demand

订单农业在我国的应用是客观现实的选择，但也存在着一些问题，因此，现阶段发展订单农业需要在风险规避机制、微观管理和服务、宏观政策环境优化等多方面创新，趋利避害，进一步完善和发展订单农业，提高订单农业的应用效果。

What are you basing this theory on?

你这种理论的根据是什么？

Based on seismic, well logging, drilling and core data, five super sequence boundaries have been identified by using methods of sequence stratigrphy theory in deep formations of Shengping area, northern part of Songliao basion. They are the top boundaries of bed rock (SSB1), the bottom boundaries of Shahezi group (SSB2), the bottom boundaries of Yingcheng group (SSB3), the bottom boundaries of Denglouku group (SSB4) and the bottom boundaries of Quantou group (SSB5) respectively.

应用层序地层学基本理论，在综合分析工区地震、测井、岩心等资料的基础上，确立了超层序界面、准层序和准层序组识别标志，进而对松辽盆地北部升平地区深层进行超层序界面识别，共识别出五个超层序界面，分别为基岩顶面(SSB1)、沙河子组底面(SSB2)、营城组底面(SSB3)、登娄库组底面(SSB4)和泉头组底面(SSB5)。

On the basis of the concept of space vector, the basic theory of DTC is analyzed. Also a representative DTC strategy improving operation performance of induction motors, which is called DSVM, is introduced.

在阐述空间矢量概念的基础上，分析了传统两电平逆变器异步电机直接转矩控制的基本原理，并引入了一种典型的直接转矩控制改进算法DSVM。

In this paper , on the basis of the vector theory of optical refraction a scanning trace of 45 ° multi-parallel scanning mirror was analysed , and the corresponding formulas are given.

本文在光反射矢量理论基础上，对45°镜多元并扫探测器并扫成像特性和扫描轨迹进行了分析，得到了探测平面上任意位置探测器元的扫描轨迹公式。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。