The bigger the animal is, the lower its surface-to-volume ratio; for every ounce of body mass, there is proportionately less surface through which heat can escape.
动物体型越大,其体表体积比越低;躯体每增加一盎司的重量,所能散发热量的表面就成比例减少。
The convection zone reaches up to the sun's surface, and makes up 66 percent of the sun's volume but only a little more than 2 percent of its mass.
对流区的范围直达太阳表面,占有太阳体积的66%,但只有太阳质量的2%多一点儿。
Next is the radiative zone, which extends from the core to 70 percent of the way to the sun's surface, making up 32 percent of the sun's volume and 48 percent of its mass.
接下来是辐射区,其范围从核心表面到太阳半径的70%处,占太阳总体积的32%,总质量的48%。
Those include uncovering how bubble growth rates vary with the number of bubble sides and minimizing the surface area per unit volume.
比如探究气泡生长速率如何随气泡面的数目变化而变化,以及单位容量内使表面积最小化。
The Arctic fox can survive some of the most extreme temperatures on the planet with its thick fur and low surface-area-to-volume ratio.
北极狐拥有厚厚的皮毛,身体的散热面积较小。即使在一些极端的温度下,也能顽强地生存。
They already know that the nearby glacier of Mururata has lost more than 20% of its surface area since 1956 due to higher temperatures, and probably a greater percentage of its volume.
他们已经知道,由于高温,1956年起附近的穆鲁拉塔山(Mururata)冰川表面积已经消失了超过20%,体积的百分比则可能更大。
Resistivity is determined by measuring resistance, then converting to surface or volume resistivity by taking geometric considerations into account.
电阻率的测量方法是测量电阻,然后再考虑几何因素将其变换成表面电阻率或体积电阻率。
It is very convenient to calculate the object volume to use Riemann sum after obtained the object surface region equation.
在已知空间物体表面区域方程的前提下,利用黎曼和可以方便地求出被测物体的体积。
The content of the survey involved the volume density, surface and length densities.
内容涉及到各种组织的体积分数、面积密度、长度密度等。
This section details how to make surface and volume resistivity measurements with these test fixtures, as well as the Alternating Polarity and Alternating Voltage techniques for measuring resistivity.
本节详细介绍如何使用这些测试夹具来进行表面电阻率和体电阻率的测量,以及测量电阻率时使用的变换极性和变换电压的技术。
Glass and ceramics also have high volume resistivity, but poor surface properties at high humidity and often-poor piezoelectric properties.
玻璃和陶瓷也具有很高的体电阻率,但是在高湿度下表面电阻率性质较差,并且其压电性常常也较差。
As the intensity of air—oxidation treatment increased, the surface area of the PSAC decreased, but its total pore volume increased.
并且随着氧化强度的增强,沥青基球状活性炭的比表面积减小,但总孔容增加。
Doing area surface and volume integrals.
作面积分和体积分。
Volume and surface resistivity measurements are dependent on several factors.
体电阻率和表面电阻率的测量决定于几个因素。
The results reveal that the average surface spacing decreases with the increase of volume fraction of aggregates and fineness of aggregates.
研究结果表明:随着集料体积分数的增加和集料细度的提高,平均最邻近集料表面间距减小;
The surface area of aggregate per unit volume of mortar does have influence on the mean value of the nearest surface spacing, but the ratio between them is not constant.
单位砂浆体积下集料的表面积的变化对邻近集料表面最近间距的平均值有影响,但二者之间的比值并非常数。
This thesis introduces the concept, structure and properties of semiconductor ultrafine particle (SUFP), including quantum-size effect, surface effect and volume effect et, al.
介绍了半导体超细粒子的概念、结构及特性,主要是包括量子尺寸效应、体积效应、表面效应;
Marching cubes (MC) algorithm is a classical algorithm to extract iso-surface from regular volume data. At last, a medical images reconstruction system based on MC algorithm is developed.
移动立方体(MC)算法是基于规则体数据抽取等值面的经典算法,本文最后设计开发了一个基于MC算法的医学图像三维重建系统。
An effective algorithm is presented here for seeking and realizing the intersection of tool sweep volume with surface vector.
提出一种实现刀具扫描体与曲面矢量求交的有效算法。
The volume resistance and surface resistance measured by three electrodes and the resistance between two electrodes (r) of carbon fiber reinforced cement (CFRC) were studied.
研究碳纤维水泥试块两电极电阻和三电极法测得的体积电阻与表面电阻。
Methods for determination oil volume on tin plate surface were reviewed, which include gravimetry, hydrophil balance method, molecular spectrometry and ellipsometry etc.
对测定镀锡板表面涂油量的测定方法进行了综述,这些方法包括重量法、亲水天平法、分子光谱法和椭圆偏振法等。
The surface area, the pore volume and the activity of isopropanol decomposition reaction are only a function of exchange degree and are not affected by the exchange methods.
固相交换样品的比表面、孔容变化和异丙醇分解反应活性都与液相交换样品相同,只是交换度的函数,与交换方法无关。
The result shows that adsorption and desorption performance of Benzene vapour by activated carbon are related to the specific surface, hole volume, hole diameter and distribution of hole.
结果表明:苯蒸汽在活性炭上的吸脱附性能明显与吸附剂的比表面、孔容、孔径与孔径分布直接相关。
The liquid cryogen contacts the metal surface, generating a volume of expanding gas over the metal surface.
液体制冷剂接触金属表面,从而在金属表面上产生一定体积的膨胀气体。
The liquid cryogen contacts the metal surface, generating a volume of expanding gas over the metal surface.
液体制冷剂接触金属表面,从而在金属表面上产生一定体积的膨胀气体。
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