When experimental populations are set up under simple laboratory conditions, the predator often exterminates its prey and then becomes extinct itself, having nothing left to eat.
当实验种群在简单的实验室条件下建立起来时,捕食者往往会消灭它的猎物,然后自己也走向灭绝,因为没有东西可以吃。
This was all a ruse, however, to set up a series of experimental conditions related to how hard to get each of the women appeared to be. Each woman fell into one of the following categories.
然而,这全然只是个为了建立一系列的实验条件而使用的一种伎俩,就是制造关于这些女性看上去有多难追的一种印象。
Fifteen chimps and 24 children were introduced to the same experimental set-up: a room containing both a single end of rope and a doubled-over rope with two available ends.
15个黑猩猩与24个儿童面对相同的实验环境设定:一个有一端的绳子和两端的绳子的房间。
An experimental instrument is set up to observe the energy distribution of electrons (mainly secondary electrons) on the anode screen in the field emission.
我们搭建了一套实验装置,用来观察场发射中到达阳极屏上的电子(主要是二次电子)的能量分布。
In this paper, the principle from analog regulation to digital regulation is explained, as an example, a block diagram and experimental set-up for position regulation system are introduced.
本文从原理上说明了如何从模拟调节实现数字调节,又以位置调节系统为例介绍了方框图并简单介绍了实验装置。
At last, experimental platform for a piezoelectric cantilever beam is set up, and the theoretical analysis has been verified by experiments.
最后,搭建了压电悬臂梁结构主动振动控制的实验平台,对理论分析结果进行了验证。
To guide the application of an active balancing device in industrial cantilever rotors, a cantilever rotor test stand was set up to perform an experimental study of active balancing technology.
为了指导主动平衡装置在工业悬臂转子上的应用,搭建了悬臂转子实验台进行主动平衡实验研究工作。
Based on molecular diffusion model of water vapor a theoretical model of frost growth is established and an experimental set with a liquid nitrogen cooled tube is built up.
以蒸汽分子扩散模型为基础,建立了预测霜层生长过程的数学模型,并建立了以液氮为冷媒的管内强制流动结霜实验台。
The focal point of this paper is the teaching experimental system based on setting up a set of industrial control network.
本文重点是建立一套工业控制网络的教学实验系统。
AIM to set up the experimental model of canine thoracic cavity gunshot wounds, and to explore the causes of early death and the effects of early rescue.
目的建立犬胸腔枪弹伤致伤模型,探讨早期致死原因和早期救治效果。
On the principle of similarity, the early slag flow in dropping zone is investigated hydraulically with an experimental set-up locally analogues to a blast furnace.
根据相似原理,对高炉滴落带初渣流动进行了区域模拟的实验研究。
An experimental installation was designed and set up for investigating the mixed convection heat transfer when water flows upward through a vertical annuli filled with porous medium.
本文报道了水向上流经垂直多孔介质同心套管混合对流的传热实验装置和进口段对流换热的实验结果。
In this paper, both boundary extraction and image interpretation aspects are mainly studied, and an experimental prototype system is set up for ultrasound image assistant interpretation.
本文围绕着边界提取和图像解释这两个中心问题进行了研究,建立了超声图像计算机辅助解释实验原型系统。
So it is one of the chief factors to set up measurement systems that can measure dielectric parameters of real tissues and equivalent phantom models, so as to carry through experimental studies.
所以,建立起能够测量生物组织和等效体模介电参数的测量系统,就成了进行实验研军口旱匡大单刃士学位论文究的首要条件之一。
In this paper a precendent experimental set-up and processing method for seismic holography is presented.
本文提出了开展全息地震勘探研究的前期实验装置及处理方法。
This paper use experimental data to set up linear regression equation with unitary and regression straight line, to use variance analysis and related coefficient to test validity of equation.
本文利用实验数据建立一元线性回归方程;回归直线,并用方差分析法和相关系数法检验方程的有效性。
The alcohol fermenting rate equation with only two experimental parameters including slope and intercept was set up, which was simple and practical.
建立了只有发酵速率方程斜率和截距两个实验参数,方便、实用的酒精发酵速率方程。
A heat and mass transfer model was set up, and the simulation results were found to be in accordance with the experimental data.
建立了过程的热质传递模型,比较模拟数据与实验数据,验证了理论模型有较好的适用性。
The experimental set -up and working principle of electromagnetic electrical conductivity sensor are briefly described. The experiment result and application are also presented.
简要地介绍了电磁式电导率传感器的实验装置和工作原理,同时也讨论了实验结果和应用。
An experimental test system for the direct methanol fuel cell under microgravity environment was set up.
建立了短时微重力落塔实验专用直接甲醇燃料电池性能测试系统。
The paper will set up an experimental system, measure the light distribution in two layer tissue phantoms, and compare the experimental results with the Monte Carlo modeling.
本文拟建立一套实验装置,测量双层生物组织模拟体中的光分布,并将实验结果与理论计算的结果进行了比较。
The experimental set-up of ILFBBR is built, and the formation process of biofilm on the carrier is investigated.
建立了内环流固定床生物膜反应器实验装置,并对生物载体挂膜进行实验研究;
Based on experimental data, the functional relationship between displacement pressure of mudstone and vitrinite reflectance is set up.
本文在大量实验数据的基础上,建立了泥岩排替压力与镜质体反射率之间的函数关系。
The experimental set-up consists of a plasma generator, a semi-closed vessel, a special bolt with a blowout disk and other accessories.
试验装置是由等离子体发生器、半密闭爆发器本体和一个专用螺栓以及其他附件组成。
The new system could set different corona conditions, and there were up to 54 samples could be tested synchronously under the set experimental conditions system.
该系统能实现不同的电晕试验条件,能够同时对54个试样进行电晕老化试验。
An experimental set up of travelling magnetic field excited by supper power permanent magnet was designed, which has obviously refine function for metal solidification structure.
开发了一套以强磁性永磁体为驱动介质的行波磁场发生器,该装置具有使金属凝固组织微细化的作用。
We bring forward the Generating cutting method based on spherical gear drive, and develop experimental cutting set-up in principle.
提出了球齿轮传动的范成法切削加工方法,并研制了切削加工原理性试验装置。
Methods Referring to the result of the former researcher, the new model was set up using the theory of fractal geometry and verified by means of experimental results.
方法结合前人的研究成果,利用分形几何学理论建立新的团聚模型,并用实验结果加以验证。
Objective To set up an experimental model of stress fracture, and further explore the pathogenosis of stress fracture.
目的:建立应力性骨折实验模型,探讨应力性骨折发生机理。
Objective To set up an experimental model of stress fracture, and further explore the pathogenosis of stress fracture.
目的:建立应力性骨折实验模型,探讨应力性骨折发生机理。
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