The reason for this is easy to recognise: in nature, the existent organisms either adapt or are regularly replaced by new types.
原因很容易理解：在自然界中，现存的生物要么适应环境，要么被新物种取代。
The existent form of the network fictitious property.
网络虚拟财产的存在形态。
The existent questions and progress direction of laser seeker are discussed.
针对目前存在的问题，评述导引头今后的发展趋势和方向。
Some energy level orders are different from the existent theoretical results.
在个别能级次序方面得到了同以往理论不同的结果。
Objective: Inquiry into the existent problem in the natural medicine teaching.
目的探讨天然药物教学中存在的问题。
Analyzes the existent problems of technique system in Huipodi preparation plant.
分析了回坡底选煤厂工艺系统存在的问题。
This paper puts forward some concrete countermeasures by analyzing the existent issues.
本文通过对存在问题的分析，提出了一些具体的对策。
Time and space are not only the existent way of matter, but of tourism activities as well.
时间和空间是物质存在的方式，也是旅游活动存在的方式。
The existent rationality of it will be proved by putting forward and exerting the citizen admittance .
人口准入的提出和现实的运作，证明了其存在的合理性。
This article introduces the existent problems and improvement methods about the Chemistry's Chapter Alkali Metals.
叙述《碱金属》一章的有关实验存在的问题和改进方法。
It USES the existent mechanism of bandwidth management to allocate the bandwidth for completed flows by weighted fairness.
本文基于已有的带宽管理机制，采用加权公平对竞争的流进行带宽分配。
With this background, loneliness became the existent state of everyone, especially the urban population which cannot escape.
在此背景下，孤独成为每个人、尤其是都市人无法逃避的生活状态。
The existent stone ruins, vestige of a traditionalhouse and the lot's configuration, were the main aspects for the new project.
现存的石头遗迹，一个传统房屋的遗址以及这块地的配置都是这个新项目的主要方面。
By the research on the existent IR (Information retrieval) technology, a text retrieval model based on inference network is designed.
在研究现有文本信息检索技术的基础上，设计了基于推理网络的文本检索模型。
The new program reinvents the existent building, making it a meaningful space in a peripheral region in the middle of the Atlantic Ocean.
这个新项目彻底改造了现有建筑，使之成为中大西洋周边地区有意义的空间。
One of ai kernel question is how to express the existent knowledge and how to apply them for analysis and inference to obtain new knowledge.
人工智能的核心问题之一是如何表达已有的知识，以及如何应用已有的知识进行分析处理和推理，而得到新的知识。
Aiming at the existent problems of the electrohydraulic servosystem of hydraulic turbine governor, a new scheme on this system is worked out.
针对目前水轮机调速器电液随动系统存在的问题，提出了一种新型的调速器随动系统方案。
Compared with the existent integrated navigation system, the system has little decision-making error, better real-time performance and veracity.
与现有车载导航系统相比，该系统决策误差信息小，具有较好的实时性和准确性。
If it were only for the sake of an idea Copernicus would have smashed the existent macrocosm and Columbus would have foundered in the Sargasso Sea.
如果仅仅是为了一个观念，哥白尼本会砸烂整个现存宇宙的，哥伦布也会葬身马尾藻海。
Absolute value idea is regarded as the existent way of human beings and its possibility is demonstrated in the practical pursuit of social history.
绝对价值观念作为人类的生存方式，它的可能性蕴含在立足于社会历史的实践追求中。
Introduced the existent shortcoming and the process in the sum choosing of cutting dosages, suggested that cutting dosages optimize design procedures.
介绍传统选择切削用量的过程和存在的缺点，并提出切削用量优化设计方法。
Individual unification is the result that individual and societies unify mutually, as a result traditional mental analysis lost the existent foundation.
个体同一性是个体与社会相统一的结果，因而传统的心理分析丧失了存在的基础。
In the paper, some remarks are made on several primary testing methods of causality, and the existent problems in these testing methods analyzed thoroughly.
文章对几种主要的因果关系检验方法进行了评析，并针对这些检验方法存在的问题作了深入分析。
All in all, combined the existent problems of actual election, merits, shortcomings and strategic votings of the ordinary voting rules are discussed and studied.
总之，本文结合实际选举存在的问题，讨论和研究了常用投票规则的优缺点和其策略投票方式。
This article analyzes the special requirement of multimedia real-time transmission to communication network, the support ability and the existent problem of IP network.
分析了多媒体数据实时传输对通信网络的特殊需求以及当前IP网对多媒体信息实时传输的支持能力和存在的问题。
Either the new getting in or the existent getting out of the market, there were various high market barriers that made the industry structure optimization to be confined.
无论是新银行进入市场，还是在位银行退出市场，都面临着各种层层高筑的市场壁垒，产业结构优化受到严重限制。
The characteristics of soil water and nutrients in the existent vegetation communities are the very important references for intervening and regulating vegetation restoration.
现存不同植物群落的土壤水分和养分特征对有效干预和调控植被恢复有着非常重要的参考价值。
The characteristics of soil water and nutrients in the existent vegetation communities are the very important references for intervening and regulating vegetation restoration.
现存不同植物群落的土壤水分和养分特征对有效干预和调控植被恢复有着非常重要的参考价值。
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