介绍

The distribution of lifetimes of species follows an approximate power law only over a limited regime, and the distribution of trophic level follows an exponential attenuation.

首先，在第一章中介绍了数学生态学和生态模型发展的几个热点，然后介绍了Chowdhury等的统一的宏观和微观的生态模型及它的发展情况。

And brief description is made of the performance of the different types of tungsten electrode s.

对当前钨电极材料进行了分类，对不同稀土钨电极的使用性能进行了简单介绍，同时对几种典型稀土钨电极的制备及研究进展进行了详细综述，并介绍了钨电极的应用及发展情况。

Firstly, this paper introduces the model-line of the scroll expander in detail and deduces integrally the geometrical theory on the scroll expander. Basing on the transparent geometrical relation of the scroll expander, force analysis of the immobile and the rotary turbination are showed in the paper.

首先，本文比较详细的介绍了涡旋机械的型线构造，之后对涡旋式膨胀机的几何理论进行了比较全面介绍和推导，在明晰涡旋膨胀机基本几何关系的基础上，对动、静涡盘进行了受力分析。

The page introduces the holdings, also the national Plant Specialist Group, Flora of the Philippines Project and Type Specimen Collection.

该网站介绍了标本馆的所有收藏，也介绍了国家的植物专家研究团体、菲律宾植物志项目和它的模式标本收藏。

In this chapter, the total design of software and the real-time operation system uC/OS-II are introduced.

这一章介绍了嵌入式数控系统硬件部分的总体结构设计，并详细地介绍了各部分电路的设计及原理图。

An application based on MSP430F413 and MAX3221 is introduced. In this application, the details of this method and ultra low power consumption techniques are described.

介绍了MSP430F413与TI的通信接口器件MAX3221构成的与微机进行串行通信的超低功耗方案，并介绍了该方法在其中的具体应用。

After giving a brief analysis of pressure hazards and accident simulation methods, the authors introduce the system of European PED - EN system for pressure equipment in order to eliminate or reduce pressure hazards by studying 97/23/EC Pressure Equipment Directive and EN13445 Unfired Pressure Vessels and describe the impacts of PED - EN system on the ASME pressure vessel codes and the...

本文在简要分析压力危险以及事故后果模拟方法的基础上，先结合97/23/EC《承压设备指令》、EN13445《非火焰接触压力容器》等规范标准，介绍以消除或降低压力危险为出发点的欧盟承压设备规范标准体系，再介绍美国应对欧盟97/23/EC《承压设备指令》的对策措施，最后提出按压力危险程度确定承压设备的范畴、以标准应满足法规要求的理念建立承压设备法规标准体系、开展承压设备基本安全要求研究、研究承压设备最新规范标准和我国应对策略、成立中国承压设备研究委员会等建议。

We introduce the basic theory of quasiconformal mappings of the development and the research situation of the theory of quasiconformal mappings, the theory of Schwarz derivatives and the inner radius of univalence.

在这一章中，我们简单介绍了拟共形映照的基本理论，回顾了拟共形映照及Schwarz导数理论的发展及区域单叶性内径的研究现状，并简要的介绍了作者的主要工作。

The utilization of LNG as city gas in China is introduced, and LNG transportation, storage and vaporization are also discussed in detail.

介绍了液化天然气作为城市气源在我国的利用情况，并介绍了液化天然气的运输、储存、气化技术。

The general research background is given at the beginning of the thesis. And a detailed study follows, complete with the past work and state of the art, the core techniques and the prospect of the algorithm, structure and VLSI implementation of the variable length decoding and motion estimation focused on the characteristics of low complexity and low power of wireless applications.

在介绍课题的总体背景后，对论文的主要研究内容进行了综述，针对低带宽应用的低复杂度、低功耗等特点从算法、结构和VLSI实现三个方面详细介绍了国内外的发展情况，并对其主要设计技术及发展前景进行了探讨。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。