They controlled for changes due to social and cultural factors to calculate how strongly natural selection is shaping these traits.
研究小组严格控制了社会及文化因素引起的差异，以便单纯研究自然选择对这些特征的选择性到底有多强。
This paper introduces hydraulic vibration-exciting system for marble moulding machine, and pats forward rational selection method of vibration. parameter for the system controlled by rotary valve.
本文介绍了应用于再造大理石成型机的液压激振系统，并提出了应用转间控制的系统其振动参数的合理选择方法。
The whole digit-controlled lathe of lower prices generally choose stepping drive unit price is higher, and the machine tool selection servo drive unit.
整台数控机床价格较低的一般选择步进驱动单元，而价格较高的机床选择伺服驱动单元。
The selection of filter is controlled by software, so that low-noise signal can be acquired in a wide frequency band.
由软件控制选择滤波器，这样可以在很宽的频带获得低噪声的信号。
The pressure parts construction, design criteria of water wall, calculation procedure of water circulation and selection of critical parameters for controlled circulation boiler are introduced.
介绍了控制循环锅炉的结构特点，水冷壁等系统的设计准则，水循环系统设计的计算步骤及设计中关键数据的选取。
Finally the article evaluates the methodology, data source, the measurement of key index, the selection of industry and controlled variable.
最后对文章所使用文献的方法、数据来源、关键指标的衡量、产业的选择及控制变量进行分析与评价。
The kind and relative content of nitrides in nitrided layer can be effectively controlled through appropriate selection of technological parameters.
合理选择离子氮化温度、气氛氮势和处理时间，能有效控制钛材氮化层中的化合物相的种类和相对含量。
This paper presents a selection method of sliding-mode switcher wire of a variable structure system (VSS) controlled with temperature, and the practical results show this method to be effective.
本文给出了一种温度控制变结构系统(VSS)滑模开关线的选择方法，结果表明该方法是行之有效的。
Automation: Microprocessor controlled optical bench, digital speed control, automatic gain selection, advanced system check, automatic power saving mode.
自动化：微处理器控制光学台，数字化动镜控制，自动增益选择，高级的系统诊断，自动节电模式。
SELECTION CRITERIA: Randomised controlled trials comparing calcium channel blockers given in the peri-transplant period with controls were included. Quasi-randomised trials were excluded.
选择标准：比较对照和钙通道阻断剂围移植手术期给药的随机对照试验入选。半随机对照试验被排除。
The Smart control strip and Preset Selection can also be controlled by host automation and MIDI control.
智能控制地带和预置选择，也可以由主机控制，自动化和MIDI控制。
The selection of conditions on controlled potential, the kinds of supporting electrolyte and so on lessns the background current and makes the standard deviation less than 0.
进行了控制电位、支持电解质种类等条件选择，使得测定背景电流小，标准偏差低于0。
In the method, the interior grid distribution is controlled by prior selection of the grid point distribution along the boundaries of the region.
本文采用了一种利用边界网格节点分布信息来控制区域内部网格节点分布的网格生成技术。
The selection problem of controlled variable locations was settled by comparing the temperature responses at different locations.
通过对不同位置的温度响应分析比较、对控制点位置的选择提供了基础。
Conclusion: the pulsatile release of aspirin can be controlled by selection of disintegrants of the core and changing composition and thickness of the coating film.
结论：通过选择片芯中的崩解剂、调整包衣层组成和厚度，可以用包衣的方法得到不同时间脉冲释药的阿司匹林片剂。
With this controller, the electronic needle selection can be controlled by selecting cycle data and the output message can be displayed dynamically.
该控制器可以实现用选外循环数据去控制提花袜机的电子选针，并动态显示产量信息；
When printing lists, contains a value that displays where the printing was started, for example, NEW-PAGE for program-controlled printing, or RSDBRUNT for printing from the selection screen.
当打印清单时，显示打印从何处开始的值，例如NEW - PAGE为程序控制的打印，或者RSDBRUNT为从一个选择屏幕打印。
In this paper, a 16 stages digital controlled DC stabilized voltage source based on LM317 is designed. Selection and realization of the adjustable resistance in this source is introduced.
以三端稳压集成电路LM317为基础，设计了一种16级数控直流稳压电源，介绍了该电源中可调电阻的选取与实现。
Four respects including roll selection, grinder situation, technique and inspection are controlled to ensure to grind roll accord with the rolling demand on O5 plate.
从轧辊挑选、磨床状态、工艺方法、检查等四个方面进行控制，确保了磨出符合O5板轧制要求的轧辊。
Introduces the working principle and the method of the selection about the type ZY47 Valve controlled by the pressure difference, and analyses its adaption condition.
介绍了ZY 47型自力式压差控制阀的工作原理和选型方法，分析了不同被控环路系统的适用条件。
The five agronomical traits of husk are controlled by the additive inheritance effect, so they could be improved by selection of parents in maize breeding.
苞叶的几个农艺性状主要受加性基因效应的控制，因此通过亲本的选择改良可以有效地改良其苞叶农艺性状。
Considering the number limit of signal transmit channels, the selection of line which is measured and generator which is controlled goes along following these steps in this paper.
考虑实际系统中信号传输通道的数量限制，本文中确定了以下步骤进行被测线路和被控发电机的选择。
The cracking condition of hydraulically controlled check valve in locking circuit is studied via problems encountered in practice and a method for correct selection is presented.
通过实践中发现的问题，分析液控单向阀在锁紧回路中的开锁条件，提出正确选配办法。
Fuzzy control method is a good selection because it is not depend on exact model of controlled object.
模糊控制方法不依赖于被控对象精确的数学模型，因此是一个良好的选择。
Microprocessor controlled optical bench, digital speed control, automatic gain selection, and dynamic resolution enhancement, advanced system check.
自动化：微处理器控制光学台，数字化动镜控制，自动增益选择，动态分辨率增强，高级的系统诊断，校正滤波器。
Metal-to-metal contact is controlled by proper viscosity selection and use of film-forming compounds.
金属表面接触是由适当的粘度与油膜形成的复合物所控制。
GPRS cell selection and re-selection is done locally by the MS, or may optionally be controlled by the network.
GPRS小区的选择和重选可以由移动台本地完成也可以由网络侧控制。
Study Selection Randomized controlled trials of any inhaled anticholinergic for treatment of COPD that had at least 30 days of treatment and reported on cardiovascular events.
文献纳入规范研究吸入抗胆碱能药物疗治COPD的随机对照试验，药物疗治时间不少于30天，而且报道有心思和精力管不良事件。
SELECTION CRITERIA: Randomised controlled trials.
选择标准：随机对照。
SELECTION CRITERIA: Randomised controlled trials.
选择标准：随机对照。
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