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Firstly, this paper presents the basic situation of the anti-aircraft gun. Secondly, it explains the principles of laser shooting simulation.

本文首先对高炮的基本情况作了简要介绍，然后对激光模拟射击的基本原理加以阐述。

This paper sorts out and explains the pure-republicanism's concept of republic, the anti-Federalist concept of republic and Madison's compound concept of republic.

通过不同语境下"共和"的内涵探析，使纯粹共和、反联邦党人的共和与麦迪逊的复合共和观得以疏理与阐释。

The magician explains that, in the way of Antoninus, he has drawn a picture on the sand inside the box, which is now hermetically sealed, and he asks someone from the audience to hold the box in their hands and to choose one of the six wooden pieces.

魔术师解释说，通过安托尼努斯。比乌斯的方式，他在盒子里的沙上画了一个图案，现在盒子是密封的。然后他要求观众用他们的手拿着盒在子，并在6个木制件中选择一块。

Then, NGC explains how they all influenced the Antonov 124, the world's largest cargo4 plane.

接著国家地理频道将解释这些飞机如何影响了世上最大货机——Antonov 124的建造。

According to the change of the enemy\'s quantity and the qualitative theory of the differential equation, we research the spruce aphides and its predator system. At the same time, we discussion the spruce aphid multiplication model when the natural enemy quantity is a certain value and the periodic oscillating model whose the quantity of the natural enemy changes along with the time. Obtains the stability condition of the balance point and the limit-cycle existing condition, the system presents the dissipative structure\'s character. Finally it explains that this theoretical analysis has certain practical significance regarding the preventing and controlling harmful insect.

第五章，松毛虫与其天敌的关系是食饵和捕食者的关系，根据天敌数量的变化，利用微分方程定性理论，研究松毛虫与天敌系统，讨论天敌数量为一定时的松毛虫增殖模型和天敌数量随时间变化的周期振荡模型，得到正平衡点全局稳定性和极限环的存在条件，通过计算机模拟，说明周期振荡的捕食模型能够呈现典型的时间耗散结构特征，对于防治害虫有一定的实际意义。

I was French, completely apolitical and my sole motivation was my love of children,she explains.

我是法国人，对政治毫无兴趣，我唯一的动机是对孩子的爱。

An appositive , a word or group of words which renames or explains, will help the reader to understand unfamiliar words.

解释：两个逗号之间的词组进一步解释了前面的生词"appositive"即"同位语"之义。

An appositive clause explains a noun, or shows the meaning of a noun.

功能： 同位语从句对名词进一步解释，说明名词的具体内容。

This book for advanced students and professionals in management and finance explains the financial appraisal of capital budgeting projects.

这对学生和先进的管理人才和金融的书解释了资本预算项目的财务评价。

This textbook for advanced students and professionals in management and finance explains the financial appraisal of capital budgeting projects.

这对学生和先进的管理人才和金融教科书解释了资本预算项目的财务评价。

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。