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Water is an active element in natural environment. 水是自然环境中极为活跃的因子。干旱是沙漠化一个最为重要的外在因素。
An active element; a word, phrase, or symbol. 有效元件；一句话，短语或者符号。
There must be one primary active partition in the system. 系统中必须有一个主活动分区。
Competition mechanism is the most active element of market economy. 竞争机制是市场经济中最活跃的要素。
Auditing is the primary activity of the CPA. 查帐是注册会计师的一项主要活动。
It goes without saying that oxygen is the most active element in the atmo here. 不言而喻，氧气是大气中最活泼元素。
The primary active ingredienn are berberine and hydrastine alkaloids, among others. 非洲防已碱是一种与黄连素联系密切的生物碱。
It goes without saying that oxygen is the most active element in the atmosphere. 不言而喻,氧气是大气中最活泼的元素。
The active element Ti can react with Al_2O_3 ceramics and form reaction layer which can join ceramics and metal. 活性元素Ti能够与陶瓷发生反应，形成反应层实现陶瓷和金属的连接，初步探索陶瓷与金属活性连接的机理为：活性元素Ti在钎焊温度下与Ag_(72)Cu_(28)钎料形成液态活性合金，与界面处陶瓷发生化学反应，实现陶瓷和金属的连接。
An active element of a digit, usually 7 segments for numeric and 14 segments for alpha/numeric digits. 一位数字，通常7部分的有效元件为数值和14部分最初/数值的数字。
I think the methodology is aimed at making the pupil an active element in the classroom. 我想，这一套方法的目的在于让小学生成为课堂上的活跃元素。
Lexis, as the most active element in language, conveys great amount of cultural-specific information and embodies social life. 词汇,作为语言中最活跃的因素,承载着大量的文化信息,反映人类社会文化生活。
In this process, films react with the active element in anneal atmosphere and recombine structure because of the high temperature. 在退火处理过程中，薄膜一方面与退火气氛中的活性物质发生反应，另一方面在高温作用下发生结构重组。
The use of the active element may simplify drawing the circuit diagram greatly and may permit easier analysis and synthesis of SI networks. 新元件的引入大大减化了电路的作图,十分便于开关电流(SI)电路的分析和综合。
My question is: Why was official business discharged as a secondary activity formerly? And what is the primary activity? 为什么从前的机关事务是作为次要工作执行的?那首要的工作是什么呢?
Decision-making is a primary activity of public administration and decision-making itself contains redistributive characteristics of social value. 决策则是公共行政内容中最主要的活动，公共政策本身即含有决定社会价值再分配的特性；
Economic and trade ties have been an important component of Sino-American relations and the most active element in the contacts between the two countries. 经贸关系历来是中美关系的重要组成部分,也是两国交往中最为活跃的一个方面。
The primary activity, application and purpose of language in the mature adult is thinking, not speech, or writing, or communication or (self-)expression. 纽马克认为成年人运用语言的目的和运用语言进行的最基本的活动是思维,而非说话或写作、交际或(自我)表达。
SMEs (Small and Medium Enterprises), as the most active element in the economic development of a region and a country, play a significant role in national economy. 中小企业是一个国家和地区经济发展最为活跃的部分，在国民经济中占有极其重要的地位。
Interesting project, though I think for only 200 concurrent users and primary activities on query( not update), I don't perf tuning will be too complicated. 正如你说的，我们首先进行的工作就是进行数据库的调优。但是现在我们在数据库的设计方面有一个问题还在犹豫不绝。