首先

In this paper the characteristics and difficulties of "Automatic Control Theory" are introduced firstly.

首先介绍了"自动控制理论"的特点和难点。

What appeared at first to me as a defect forced me into automatic programming very early.

首先跳进我脑海的是"毛病"，并促使我非常早的进入自动程序系统。

This paper introduces the optimum design idea widely used in mechanics especially in automobile at present, Firstly explicating one particular optimum method for this automobile steering gear design.

摘要本文首先介绍目前在机械行业尤其是汽车行业中应用较广的最优化设计思想并且针对本次汽车转向梯形臂的设计的一种具体方法作了详细的阐述。

It firstly gave the software and hardware environment, and then described its design plan and strategy detailedly on the base of analyzing the problems of today's automobilism simulator. Meanwhile, it builded the mathematics model, and gave the examining plan on collision of automobile. Then it elaborated systemly its achievement and basic algorithm of roaming system. Finally, it summed up the full text, and put forward the next prospect.

首先给出了该仿真系统实现的软硬件环境，然后在分析了当前驾驶模拟器仿真系统所存在的问题的基础上，详尽地描述了本系统的设计方案与实现策略，同时建立了仿真车辆实体的数学模型，并就车辆的碰撞行为给出了检测方案，接着，论文还就漫游系统的实现及其基础算法进行了系统地阐述，并就本仿真系统的特效处理给出CG语言的实现，最后，总结全文并给出了下一步工作的展望。

It firstly gave the software and hardware environment, and then described its design plan and strategy detailedly on the base of analyzing the problems of todays automobilism simulator. Meanwhile, it builded the mathematics model, and gave the examining plan on collision of automobile. Then it elaborated systemly its achievement and basic algorithm of roaming system. Finally, it summed up the full text, and put forward the next prospect.

首先给出了该仿真系统实现的软硬件环境，然后在分析了当前驾驶模拟器仿真系统所存在的问题的基础上，详尽地描述了本系统的设计方案与实现策略，同时建立了仿真车辆实体的数学模型，并就车辆的碰撞行为给出了检测方案，接着，论文还就漫游系统的实现及其基础算法进行了系统地阐述，并就本仿真系统的特效处理给出CG语言的实现，最后，总结全文并给出了下一步工作的展望。

At first,This thesis determines the full automorphism group s of connected Cayley graphs of valency 4 of .

首先，本文决定了3p(p＞3为素数)阶亚循环群的连通4度Cayleyr图的全自同构群结构，并由此得到这类图的CI性，正规性和弧传递性。

At first,in section 2.1.1,we define a new digraph Aand use it toprove that if G is of odd order and 〓 is nonnormal,the automorphism group Autof 〓 is solvable.

首先，在第2.1.1节中，我们定义一个新图A。

In the paper,Coleman automorphism is further researched and some properties of Coleman automorphism are obtained.

本文首先对Coleman自同构做了更深入的研究，得到了Coleman自同构的一些性质。

First of all, for the automotive engine theory of knowledge, I understand that

首先，对于汽车发动机理论知识的学习，我了解到

The design of autonomous flight tracking control system for helicopter is an important issue.

首先研究了自主式控制系统的关键问题，然后提出一种智能自主式航迹控制系统的结构，采用了模块化设计思想，对直升机对象的航迹控制系统进行设计。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。