The importance of implementing fast aging method for catalytic converter is firstly described in this paper, then the fast aging test equipment and test procedure we adopted are introduced.
本文首先阐述了实施催化转化器快速老化方法的意义和研究概况，然后简要介绍了快速老化试验设备和试验程序。
This paper firstly described some concepts, characteristic and architecture of grid technology.
论文首先介绍了网格技术的相关概念、特点和体系结构；
This paper firstly described temperature measurement principle and image processing method of this system.
首先介绍了系统测温原理和图像处理方法，再给出了烧嘴调试试验的结果。
This paper firstly proposes a reconfiguration-oriented and business rule-based business meta-model, based on which, a unified reconfiguration process framework is described briefly.
该文给出了基于业务规则的业务元模型与重构元模型，并基于该模型简要地描述了应用系统的统一重构过程。
This paper firstly introduced the principle of switched reluctance motor; the working principle and control of PWM converter, which USES timing and compare of instantaneous value, is described.
本文对开关磁阻电机发电运行原理，对采用定时瞬时值比较方式的PW M变流器的原理与控制进行分析。
In the first part of this paper, the TWAIN standard is described in detail firstly, then an implementation of image acquisition is presented, and a comparison of different data transfer modes is made.
第一部分首先对TWAIN标准进行了详细介绍，然后给出图像采集的具体实现方法，并对不同的传输方法进行了比较。
In this paper, the process and equipment of liquefied petroleum gas (LPG) mixing with air are described firstly.
论文先对液化石油气(以下简称LPG)混空气装置及生产工艺作一定的描述。
This paper described the domestic and international theoretical research of the complicated system theories and the coordination mechanism of supply chain firstly.
然后，分析了船舶供应链的复杂性特征，构建了一个多周期、多产品、多约束的基于复杂系统理论的层级船舶供应链协调模型。
This paper, firstly, introduced the Connotation of E-U-R cooperation, described the basic theory of E-U-R cooperation.
本文首先介绍了产学研合作的内涵，阐述了产学研合作模式的理论基础。
This paper firstly described and compared major transition technologies in transition period, researched the function, principle and classification of tunneling.
本文首先对过渡时期的主要技术进行了介绍和对比，详细研究和介绍了隧道技术的功能、原理和分类。
This paper firstly described the research present situations and develop trends of the city public safety, research purposes, meaning and contents of this thesis;
本论文首先介绍了城市公共安全的国内外研究现状、发展趋势和论文的研究目的、意义和内容；
The design of the microwave waveguide cavity is given firstly in this paper. Then the calculation of the slab waveguide CO_2 laser with phase locking coherence output is described.
第二部分对如何得到同相锁定相干输出的板条形CO_2光波导进行设计计算；
The design of the microwave waveguide cavity is given firstly in this paper. Then the calculation of the slab waveguide CO_2 laser with phase locking coherence output is described.
第二部分对如何得到同相锁定相干输出的板条形CO_2光波导进行设计计算；
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