We tend to assume that all characteristics of plants and animals are adaptations that have arisen through natural selection.
我们倾向于假设动植物的所有特征都是自然选择的结果。
Mimicry arises as the result of evolution through natural selection and the occurrence of random genetic mutations that lead over many generations to the appearance of favorable characteristics.
拟态是无数代自然选择和遗传变异的进化而获得的有利特征的结果。
Natural selection blew in the same direction - i.e., favored the same sets of characteristics - for, at most, three years in a row.
显然自然选择趋向了同一方向——即选择了相同的特性，而这种选择至多连续3年。
This brings up a pane titled Styles and formatting and reveals the formatting characteristics of the current selection.
这将会打开一个名为StylesandFormatting的窗格，并揭示当前选项的格式化特征。
Through natural selection over thousands of years, these characteristics continue to the present day.
经过数千年的物竞天择，这些特征延续至今。
A systematic long-term change of this kind suggests the action of natural selection and indicates that female skeletal characteristics confer greater fitness. But is this the whole story.
这种长期的系统变化说明自然选择的作用，并表明女性骨骼的特性较大的适应性。但是，情况完全是这样的吗？
In Figure 9 you can see that there are only two instances of text that have an exact match of formatting characteristics in the first selection, organized under the Introduction heading.
在图9之中，您就可以看到只有两个实例的文本，该文本在首个选项之中精确匹配格式特征，在引言标题下组织。
To make the most of this characteristics, great attention is given to the cultivation in the vineyard, with the application of biodynamic principles, the careful selection if clones.
为了充分利用这一特性，人们对如何耕作葡萄园给予了较多的关注，即利用生物的方法并且仔细挑选克隆个体。
The paper deals with the selection of acoustic phonetics of the speaker characteristics.
论文讨论了如何选取声学特征来表征不同发音者的语音个人特性。
On the basis of analyzing the test of rock properties and its processing characteristics, this paper describes the principles of equipment selection and the basic methods of key equipment selection.
在分析料源岩性试验和岩石加工性能的基础上，给出了设备选型的原则及关键设备选型的基本方法。
Characteristics and methods of research on ungulates' habitat selection in China were summarized.
综述了中国有蹄类栖息地选择研究的特点和方法。
The first stage should be the selection of an appropriate color space and extracting the major color characteristics when describing and processing an image with computer.
用计算机描述和处理图象颜色首先要选择合适的颜色空间（模型），并提取图象的主要颜色特征。
Presents the selection and calculation method and quantity determination of the circulating water pumps, and the operation characteristics of the pumps in parallel.
介绍了循环水泵的选择计算方法，循环水泵台数的确定原则，以及水泵并联运行的特点。
Objective To discuss the characteristics and operative selection of far lateral lumbar disc herniation (FLLDH).
目的探讨极外侧型腰椎间盘突出症(FLLDH)的诊治特点和术式选择。
In automatic mechanism selection system based on orbit, orbit characteristics and dimension parameters of key orbit segments are momentous for selecting mechanisms.
基于轨迹的机构自动化选型系统中，轨迹特征及关键轨迹段尺寸参数是选择机构的重要依据。
This includes selection of special characteristics, setting quality objectives and related training, corrective and preventive actions, product design and development.
这包括如选择特殊特性、制定质量目标、有关的培训、纠正和预防措施、产品设计和开发。
There is important significance for the engineering practice to study the engineering geological characteristics of rock and soil ground and the selection of the foundation types.
滨海平原地带是滨海城市建设的重要地区，研究其岩土地基工程地质特征与基础形式选择，对指导工程实践有重要意义。
This paper analyzes the structural characteristics of this abnormally webbed wheel and the selection of forming equipment for the forming process.
本文分析了反辐板机车轮的结构特点，结合成形设备选择成形工艺路线。
Defect feature extraction and selection techniques were studied regarding the characteristics of X-ray detection images of carbon product.
针对炭素制品X射线检测图像的特点，对缺陷特征提取与选择技术进行了研究。
This paper introduced the characteristics and parameter selection of DC filter capacitor used in HVDC transmission system.
主要阐述了高压直流输换流站用直流滤波电容器的特点和设计参数的选择。
The outstanding advantages of DC machines arise from the wide variety of operating characteristics which can be obtained by selection of the method of excitation of the field windings.
直流电机的突出优点是通过选择磁场绕组不同的励磁方法，可以获得变化范围很大的运行特性。
The effect of selection was closely related with parent characteristics. The effect of different selection methods to select protein content varied with cross types.
选择效果与亲本特点有密切关系，不同选择方法对蛋白质含量的选择效果因杂交组合类型不同而异。
Literature research and experimental method were adopted to examine the model of shot-putting technique with back shift and the selection of model based on the characteristics of teaching object.
采用文献分析和实验法对背向滑步推铅球技术模式进行比较，并根据教学对象的特点对如何选择相应的技术模式进行了分析与探讨。
Introducing the test information for local onshore and offshore diaphragm filter presses and recommended a range for selection. Analysis is made for the technical characteristics of diaphragms.
叙述了国产和国外隔膜压滤机的实验情况，提出在生产应用中可选用的范围，并对隔膜压滤机技术特点做了具体分析。
The characteristics of this method is that the selection process is programmed and quantified.
本方法的特点是将选型过程程序化和定量化。
In this paper, the characteristics and selection of flat screen printing machine, rotary screen printing machine, stentering and heat setting dryer, open width washing machine were all introduced.
介绍平网和圆网印花机，以及拉幅、热定形、烘燥机和平幅水洗机的基本特性及其选择。
So the selection of accelerometers having the best dynamic characteristics helps to improve the features of gyro free micro inertial measurement units.
因而选用动态特性好的加速度计有助于提高无陀螺微惯性测量组合的性能。
The characteristics of flare gas discharge is analyzed, the selection and design of flare gas recovery system is discussed.
分析了火炬气排放的特点，讨论了火炬气回收系统的选择及设计。
The characteristics of flare gas discharge is analyzed, the selection and design of flare gas recovery system is discussed.
分析了火炬气排放的特点，讨论了火炬气回收系统的选择及设计。
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