Above that threshold, the SFR increases linearly with that surface density.
高于阀值时，SFR随表面密度线性增长。
The surface density of galaxies in a cluster can be measured from photographs.
一个星系团中星系的表面密度可从其照片上测得。
The surface density of cracks increases with the increasing of the degree of pre-damage.
随着预损伤程度的增加，裂纹面密度增大。
At maturity, lungs were excised and quantitative histology performed to measure alveolar air fraction and surface density.
在到期时，肺切除和定量组织学表现来衡量的一小部分肺泡的通气量和表面密度。
Objective: To explore the post-operative change of blood flow and surface density of vascular network of the pure venous flap.
目的：观测纯静脉皮瓣术后血流量和血管网面密度变化。
Porosity, surface density, thickness, flow resistance, structure factor and other factors affect the sound absorption coefficient.
孔隙率，面密度，厚度，流阻，结构因数因素综合影响其吸声系数。
In duct outside wall surface density according to choose the uniform paste insulation cotton nail, usually every square metre 8-12.
在风管外壁根据选用的面密度均匀粘贴保温棉钉，一般情况下每平方米8 - 12个。
They discovered that star formation is pretty well non-existent until the surface density reaches a certain threshold in parts of the cloud.
他们发现恒星只有在表面密度达到一定的阀值时才会较好的形成。
It begins with Maarten Schmidt who hypothesized that star formation rate (SFR) was related to the surface density of atomic hydrogen gas in the cloud.
最早是MaartenSchmidt猜测恒星形成率(SFR)与云层中氢原子气体密度有关。
Thermal insulation properties of specimens are proportional to thickness, surface density, and are inversely proportional to porosity, permeability, etc.
试样具有一定的保温性能，且保温性大小与厚度、面密度成正比关系，与孔隙率、透气性等成反比关系。
The microstructure and porosity were observed under scanning electron microscope, and the pore diameter, rate of water absorption, and surface density were determined.
以扫描电镜观察支架的表面特征，测定支架的孔径值、材料的吸水率及表观密度。
The mass distribution of surface density can be derived from the laws of surface luminosity distribution for earlier-type discoid galaxies, of which the main contents are bright.
在早型的以发光天体为主体的盘状星系中，根据光度分布规律可以得到面密度分布。
By research with electro-probe microanalyzer(EPMA), we found that the surface density and the interface combination status of the coating is the key factors that effect its anti-oxidation.
利用电子探针及透射电镜研究发现，涂层的表面致密化程度和界面结合情况是影响其抗氧化性的关键因素。
The thickness, surface density, heat flux and heat conductivity of spunlaced binding down web were tested under different frequency values, and the relationships between them were also discussed.
对不同分频值下水刺绑定羽绒网的厚度、面密度、热流量和导热系数作了测量，并对其相互关系作了讨论。
Found in all the oceans of the world, including the Arctic Ocean, appendicularians tend to remain near the water's surface where the density of phytoplankton is greatest.
在世界上所有的海洋，包括北冰洋，尾海鞘都是出没在浮游植物密度最大的水域表面。
In the simplest setup, the size of the current reveals the density of electrons in the surface, allowing it to be mapped out.
在这个最简单的装置里，电流的大小表明了样品表面电子的密度，并能绘制出来。
What's more, the temperature and density of the plumes could indicate a warmer, watery source beneath the surface.
更为重要的是，探测所得的温度和气流的密度表明，在星球表层以下有温暖潮湿的来源。
Moreover, the surface charge density of lipidic nanostructures can be varied in a simple manner.
更重要的是，其表面电荷密度可以通过简单方式改变。
These maps show the location and relative density of mangroves, which cover roughly 137,760 square kilometers (53,190 square miles) of Earth’s surface.
这些地图显示了红树林的位置和相对分布密度，它们大约占据地球表面的137,760平方千米（53,190平方英里）。
These maps show the location and relative density of mangroves, which cover roughly 137,760 square kilometers (53,190 square miles) of Earth's surface.
这些地图显示了红树林的位置和相对分布密度，它们大约占据地球表面的137,760平方千米(53,190平方英里)。
Because their density is only just smaller than sea water, a portion around one tenth of the iceberg usually sits above the surface.
由于冰山的密度比海水要小，一般露出海面的部分只占冰山的十分之一左右。
Staining of a thin sliver of each block can highlight the main bodies of nerve cells (top, purplish image) with the darker areas indicating high cell density near the brain's surface.
对每一块的细微纹路进行着色能突显出神经细胞的主体部分(上面略带紫色的图)。图中的偏暗区域代表了大脑表明的高细胞密度区域。
Ni : Average population density in area i. To simplify the analysis, Earth’s surface is divided into a grid of squares i, and the distribution is assumed to be uniform in each.
Ni：指i区的平均人口密度，为了简化分析，地球表面被按照网格分成多个i区，每个区的分布假定是统一的。
The material's large surface area, flexibility, low density, and high conductivity also make it compelling for energy storage.
材料的巨大表面积、弹性、低密度以及高导电性使得它也可以用于储存能量。
Antigen density on the tumor cell surface influences the cytotoxic sensitivity.
瘤细胞表面的抗原密度影响细胞毒的敏感性。
A part surface can be infiltrated with a low melting point metal to increase density, strength, hardness, ductility and impact resistance.
零件表面能被低熔点金属渗透以增大密度、强度、硬度、延展性和抗冲击能力。
Usually, if explosive particles have less crystal defects, more smooth surface, and higher crystal density, the explosives have lower sensitivities and better safety.
通常讲，具有更少的晶体缺陷，更光滑的外形、更高的晶体密度，则有利于降低炸药的感度，提高安全性。
Usually, if explosive particles have less crystal defects, more smooth surface, and higher crystal density, the explosives have lower sensitivities and better safety.
通常讲，具有更少的晶体缺陷，更光滑的外形、更高的晶体密度，则有利于降低炸药的感度，提高安全性。
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