secondly, this dissertation introduces basic content of pwm dc/ dc converters, discusses the basic methods of research on chaos in dc/ dc converters.

1、

the thesis come up with a highly versatile xml-based data exchange model by analyzing the basic content and the core elements of data exchange that is extensible.

通过分析数据交换所涉及的基本内容和核心要素，提出了一个具有高度通用性和可扩展性的基于XML的数据交换模型。

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2、

this article covers the basics of connecting your php application to irc.

本文涵盖了连接PHP应用程序到IRC的基本内容。

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3、

if you've written many php applications, you know what this looks like.

如果您编写过许多PHP应用程序，则会知道这些基本内容是什么。

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4、

data-intensive web-based information systems usually employ database systems to store the contents forming the basis for web page construction.

数据密集型的信息系统通常都使用数据库系统来保存构造Web页面的基本内容。

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5、

the relations among points and lines are the basic contents.

点线之间的相互关系是GIS空间分析中的基本内容。

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6、

mm theory was the basic content of the theory of corporation's capital structure and also consisting the theoretic foundation of bond market.

应该说，MM理论既是公司资本结构理论的基本内容，也构成整个企业债券市场的理论基础。

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7、

advance a coordinate and organising model of software agent based on dfl and expand some basic content of software agent;

基于DFL提出了软件Agent的协调组织模型，进一步丰富和发展了软件Agent的基本内容；

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8、

This platform margin and typical shallow bank sedimentary implies a reef development environment.

这种台地边缘和典型的浅滩沉积暗示了该区可能具有发育生物礁的环境特征。

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9、

Some biochemical changes during the early development of Aristichthys nobilis

鳙鱼ARISTICHTHYS NOBILIS早期发育的一些生物化学上的变化

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10、

A study on the Development and Biomass of Undergrowth Vegetation in Chinese Fir Plantation

不同间伐强度杉木林下植被发育及生物量研究

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11、

A Study on the Feature of Bamboo Growth and Biomass Structure in Giant Panda's Field Training Area

大熊猫野化培训圈主食竹种生长发育特性及生物量结构调查

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12、

Furthermore, recognized shelf margin reef, grain bank, shelf margin bioherm and interbank sea these four facies and 12 subfacies.

并发育棚缘生物礁、粒屑滩、棚缘生物丘、滩间海4种相，12种微相亚相。

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13、

But no organic reefs were developed in the Upper Permian and the Feixianguan Formation is lack of oolite.

但在海槽相区上二叠统不发育生物礁，飞仙关组缺乏鲕粒岩。

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14、

This is the website of Society for Developmental Biology.

这是发育生物学会的网站。

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15、

This is the web page of Department of Molecular Microbiology of JIC.

这是JIC细胞和发育生物部的网页。

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16、

The growth and the biomass allocation dynamic of plants in four ephemeral species of Trigonella which mainly were distributed in Junggar desert of Xinjiang in China were observed, and their reproductive strategies and adaptive mechanism in the arid environment were analyzed in this paper.

对生长在新疆准噶尔荒漠中的胡卢巴属4种短命植物的生长发育及生物量分配动态进行了研究，探讨了其在荒漠环境中的生长与繁殖对策。

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17、

There is an abundant biological crust on the sand surface of the desert, which serves as one of the biological factors contributing to the sand fixation besides plants.

该沙漠广泛发育的生物结皮，是除种子植物以外固定沙面的重要生物因子。

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18、

A Note on Morphogenetic Field

关于形态发育和生物场的一点注记

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19、

In this study, a comparative experiment with seeding by stages and in different regions, and multi-treatments in field were used to examine its practical effect on corn growth, biomass and yield, and search suitable concentration composition and spraying stages and times.

本项研究采用分期播种、地理播种和田间多处理对比试验方法，检验该化学制剂在影响玉米发育、生物量及产量性状方面的实用效果，并探求其适宜的浓度配比和喷施期次。

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20、

This paper reviewed the effects of rare earth elements on plant root development, biomass, quality, and resistance against stress.

综述了稀土元素对植物根系发育、生物量、品质和抗逆性的影响。

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