因为这些星系的质量分布在更大的区域，它们每单位体积的恒星数量比传统星系要少得多。
Because these galaxies' mass is spread out over larger areas, they have far fewer stars per unit volume than do conventional galaxies.
所谓的电荷密度是指单位体积的电荷。
每单位体积粉末的质量，包括粒子之间的空气。
Mass per unit of volume in powder form, including the air trapped between the particles.
在物理学上，是以每单位体积的质量来鉴别物质。
In physics it is an identification of material by noting its mass per unit volume.
在特定压力和温度条件下某物质单位体积的质量。
The mass per unit volume of a substance under specified conditions of pressure and temperature.
它因为其大的晶型，单位体积只含有精盐一半的钠。
It has half the sodium of table salt, thanks to its large crystals.
岩石破碎比功表征钻井中破碎单位体积岩石的功耗量。
The rock crushing work ratio denotes the work used to break rock of per volume in drilling.
镀液单位体积的重量是焦磷酸钾和焦磷酸铜含量的函数。
The weight of copper plating solution in a unit volume was function of contents of cupric pyrophosphate and potassium pyrophosphate.
散度本身度量了，给定区域的,单位体积内的冒出的，或者流失的量。
So, the divergence itself measures basically the amount of sources or sinks per unit volume in a given place.
该类型回转窑预热系统先进，窑速加大，单位体积产量提高。
This type of circumgyrate cement kiln has advanced pre-heating system which accelerates the speed of the kiln and improves the output of unit volume.
这些稀土磁体产生每单位体积的高磁能比大多数市售的永磁体。
These rare earth magnets produce a higher magnetic energy per unit volume than most commercially available permanent magnets.
粘度增大，单位体积功增大时泛能式桨微观混合效果优于二叶平桨。
In higher viscosity and higher power dissipation rate per unit mass, micromixing ability of full-zone is better than paddle impeller.
证明随着熔体洁净度增大，单位体积中的晶粒数将先增加，然后减少。
The results showed that with the increase of cleanness of the melt, the number of grain per unit volume increased at first, and then decreased.
如果用硅制作阳极，其单位体积锂离子容量可达到前者的10倍左右。
However, a silicon anode can store about 10 times more (per unit volume) lithium ions.
单位孔隙中氢原子数量与地面条件下单位体积纯水中氢原子数量的比值。
The number of hydrogen atoms per unit volume divided by the number of hydrogen atoms per unit volume of pure water at surface conditions.
同时使单套设备满负荷运行，减少设备开启数量，降低单位体积氢气能耗。
This step can make one facility run at full capacity, another at standby application status.
事实上，每单位体积的燃油燃烧时，约需要有1万单位体积的空气通过滤清器。
In fact, each unit volume of fuel combustion, about 1 million to unit volume of air through the filter.
恒水头发电能使单位体积的水发出更多的电能，从而提高水电厂的经济效益。
Generating according to constant water head could improve the hydropower plant's economy benefit.
板式空冷器单位体积换热量约是翅片管式空冷器的1.5倍，是光管式的15倍；
The volumetric heat transfer capacity of plate cooler is 1.5 times as that of fin-tube cooler and 15 times as that of tube cooler.
本文提出单位体积极化率的概念，并用它作为非极性气体在水中溶解性大小的判据。
The concept of unit volume polarizability is suggested in this paper, it is regarded as a criterion for the solubility magnitude of nonpolar gas in the water.
冻土凿碎比能是表示凿碎单位体积冻土所消耗的功，它反映了冲击破碎冻土的能力。
The impact penetrant specific energy of frozen soil indicates the work of chiseling the frozen soil per unit volume, and reflects the ability to impact frozen soil.
如果对烟雾的浓度积分，浓度就是区域d中，单位体积的烟雾的量，我们就得到了烟雾的总量。
If I integrate the concentration of smoke, which means the amount of smoke per unit volume over d, I will get the total amount of smoke in d, except, well, let's see.
在单位体积材料中包含位错的长度，或者说在材料内部任意单位截面上位错线的根数。
The total dislocation length per unit volume of material, alternately, the number of dislocations that intersect a unit area of a random surface section.
计算表明，宏观混合时间与整个过程的混合时间的比例，随单位体积功耗的增大而增大。
It is pointed out that the ratio of macromixing time to total mixing time increases with the increase in power consumption by calculation.
该技术的阿基里斯的脚跟似乎是它的低能量密度，或可以存储在电池每单位体积的能量量。
The Achilles' heel of the technology appears to be its low energy density, or amount of energy that can be stored inside the battery per unit volume.
提出了对于定容吸附储存，吸附剂比表面大小的比较应以单位体积吸附剂的比表面为基准。
It was also suggested that the comparison of the surface area should be based on per volumetric adsorbent.
旋转电机中电磁转矩的产生，可以从作用在磁场内磁性物质单位体积上的电磁力出发加以说明。
In rotating machines, the cause of the electromagnetic torque is the electromagnetic force acting on differential volume of the ferromagnetic material in magnetic field.
用溶剂溶胀平衡法测定了聚氨酯单一网络的单位体积内有效交联链的数目和交联点间平均分子量。
The number of effective crosslinking chains per unit volume (ve) and the average molecular weights between crosslinks (Mc) were determined by means of equilibrium swelling measurement.
因为冷气流密度较高(更大的质量单位体积内)，冷空气引入采一般的工作从外面冷空气热引擎湾。
Because cooler air has a higher density (greater mass per unit volume), cold air intakes generally work by introducing cooler air from outside the hot engine bay.
以2008年全年的数据为例，北京市市区空气单位体积微小聚合颗粒数是世界卫生组织标准的6倍。
The average concentration of particulates in city air during 2008, for example, was six times the ideal standard recommended by the World Health Organization.
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