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Firstly, the paper briefs the research status quo, the principles and methods of Auto-focus technology.

本文包含了以下一些内容：(1)介绍了自动对焦技术的现状、原理和方法。

Firstly, in order to bring the integration into real effect, it is necessary to nail down the concept of integrating IT into mathematic course.

在这种形势下，提出信息技术与数学课程整合的实践研究，对整合的实施进行深入的探索和思考，以促进真正、有效的整合，具有重要的意义。

Firstly, research has been carried out on the definition and peculiarities of brittleness.

首先，针对复杂系统脆性的定义和特点进行研究。

If you decide to have broadband installed you need to firstly check that it is available in your area.

如果你决定要安装宽带，你需要首先检查它在你的领域。

Annie: Firstly, they have broadsword, spear, sword and halberd, etc.

安妮：首先有：刀、枪、剑、戟等，传统武术使用的十八般兵器。

Firstly, XRD, TEM and FT-IR were used to characterize the structure of CNTs treated by dense HC1, dense HNO_3, HNO_3, H_2SO_4-HNO_3, K_2Cr_2O_7-H_2SO_4 and bromic acid. The results showed that purification treatment had no change on the structure of CNTs. But on the top of CNTs have function group such as -OH and -COOH after H_2SO_4-HNO_3 and K_2Cr_2O_7-H_2SO_4 were treated.

采用浓HCl、浓HNO_3、H_2SO_4-HNO_3、K_2Cr_2O_7-H_2SO_4、溴水共5组物质分别对CNTs进行纯化处理；借助XRD、TEM、FT-IR等分析手段对处理前后CNTs结构及形貌进行表征，发现以上5种物质纯化处理并不会对CNTs结构造成很大影响，其中H_2SO_4-HNO_3和K_2Cr_2O_7-H_2SO_4处理效果较好，除杂的同时CNTs端口带上-OH或-COOH活性官能团。

Firstly, we introduce the definition, properties and integral theory of fractional Brownian motion.

首先介绍了关于分数布朗运动的定义，性质。

The long memory of time series array firstly was found by Hurst in 1951, and then was established mathematical foundation by introducing fraction Brownian movement and conception of fractal by Mandelbrot.

时间序列的长记忆性，最早是由水文学家赫斯特于1951年提出来的，之后又由Mandelbrot引入分数布朗运动以及分形概念为之建立了严格的数学基础。

Firstly, the apoptosis and proliferation of normal chondrocytes were observed by flow cytometry and MTT respectively after treated with Semen strychni、Brucine and Strchnine.

1用流式细胞仪及MTT法观察马钱子、马钱子碱和士的宁对正常培养的软骨细胞凋亡与增殖的影响。

Firstly, current situation and future trend of the world trade of green tea. were analyzed. The emphasis of this part was put on each import regions" demand character. Then, adapting the index system, the positive analysis of international competitive power concerning of the Chinese green tea was carried out. By the method of bubble chart and trade term index, China"s green tea export market distributing and export benefit were valued.

本文通过分析世界绿茶贸易的市场环境及供求现状和趋势，重点研究了世界主要绿茶消费区域的消费需求特征；对中国绿茶出口的国际竞争力进行了指标测算，并用气泡图的方法分析评价了中国绿茶的出口市场分布现状及特点；通过测算贸易条件指数的方法分析讨论了中国绿茶的出口效益和影响因素。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。