气体的密度低到足以形成对流。
The density of the gases are low enough to allow convective currents to develop.
气体的密度比固体和液体要小得多。
The gas is much less dense than either the solid or the liquid .
利用雷达也许还能探测出气体的密度。
利用1857颗恒星的光线，一个由来自法国和美国天文学家组成的研究小组通过测量星光之间的细微差距来测定太阳周围气体的密度。
Using the light from 1, 857 stars, a team of French and American astronomers were able to measure the density of the gas surrounding our sun by examining fine differences in the starlight.
这还取决于，比方说，液体或气体的密度，分子的大小，它们改变了模拟程序中的参数，它们在一个时间单元内运行的距离，或者之类的。
And, depending upon, say the density of the gas or the liquid, the size of the molecules, they change parameters in the simulation, how far it, say, goes in each unit time and things like that.
当井和一个水池相接时，油通常会从井里上升，因为它与井下的水的密度不同，或者因为停留在它上方的膨胀气体的压力。
When the well reaches a pool, oil usually rises up the well because of its density difference with water beneath it or because of the pressure of expanding gas trapped above it.
类地行星主要是岩石：密度大的石块和金属物质，同时会有少量的气体。
The terrestrial planets are mostly rocks: dense rocky and metallic material, with minor amounts of gases.
选择性附加理论写出它的高气体密度在早期太阳系，在行星的形成。
The selective accretion theory chalks it up to high gas density in the early solar system, during the planet's formation.
这种气体密度接近于核聚变所需要的数值，研究人员说。
The density of this gas was close to what's needed for nuclear fusion, the researchers said.
在两幅图中，气体密度越高的区域颜色也就越深，低密度区则更浅。
In both cases, high concentrations of the gas are dark, while low concentrations are light.
日冕的电离气体（又叫等离子体）不仅非常炙热，而且异常稀薄，其密度还不到组成太阳主体的氢气密度的十亿分之一。
As well as being very hot, the ionised gas of the corona (called plasma) has a superthin consistency. It is less than a billionth of the density of the hydrogen that makes up the main ball of the Sun.
例如平均气温的上升，它会使长期冰藏在冰层里的二氧化碳和甲烷从永冻层里释放出来——相当于温室气体二氧化碳的20倍密度。
Rising average temperatures, for example, threaten to unlock long-frozen stores of carbon dioxide and methane -- at least 20 times as potent a greenhouse gas as CO2 -- from the region's permafrost.
过去许多探测低密度气体的努力都受到了阻碍。
The low density of the gas hampered many attempts to detect it in the past.
通过仔细的理论分析，可以推导出如气体密度、温度和压力等各种物理参量，以及紫外辐射和电离辐射的流量。
With a careful theoretical analysis various physical parameters such as the gas density, temperature, and pressure, and the ultraviolet and ionizing radiation fluxes can be derived .
我们说在零密度的极限条件下，气体变成理想的。
科学家们预言气体温度可能很高于是会主要发射出低能的X射线。但是其过低的密度给观测带来困难。
Scientists predicted that the gas would have a high temperature and so it would primarily emit low-energy X-rays. But its very low density made observation difficult.
详细地讨论了微分吸收激光雷达测量气体密度时中心频率的漂移所引起的测量误差。
The measurement error of differential absorption laser radar caused by the shift of its center frequency in measuring atmosphenc density has been discussed particularly.
它将温度、压力和流量传感器融为一体，通过对气体密度进行补偿，实现了精确的质量流量测量。
It integrated temperature and pressure sensor with vortex sensor, and it realized the accurate measurement of mass flow through the compensation of gas density.
结果表明，顶吹气体流量的提高有利于增加炉衬的溅渣密度；
The splashed slag density is increased with the increase of top gas flow rate.
气体原子密度的径向分布呈一凹形。
The gas atom density exhibits a concave profile in radial direction.
在HL -1m装置上用分子束注入等离子体的气体加料方法提高了等离子体的电子密度。
Plasma electron density was increased by using the method of gas fuelling with molecular beam injection in the HL 1m tokamak.
膜分离技术广泛应用于气体分离是因为它的特殊分离效率、低质量和高填充密度。
Membrane separation technology is widely adopted in the gas separation application due to its special separation efficiency, low weight and high pack density.
激光深熔焊中侧吹保护气体方法用于降低等离子体中的电子密度抑制等离子体，TIG中活性焊剂也有吸收电子的作用。
The method of blow, side protecting gas in laser deep welding is used to reduce the electronic density of plasma, also, the active flux in TIG can absorb electron.
密度无限小，气体分子之间的相互作用。
You make the volume infinitely large, the density of the gas infinitely small.
结果表明，提高声源强度、降低重力水平或者采用密度大声速小的气体介质有利于提高声悬浮能力。
The calculated results show that strong vibrating source, low gravitational level and sound medium with large density and small sound speed will enhance the levitation ability.
采用本发明，燃烧时不会产生有毒气体，烟密度低，材料的阻燃性能、安全性能和力学性能优良。
The fireproof polyolefin composition has excellent fire retarding performance, safety performance and mechanical performance, and produces no toxic gas and less smoke during combustion.
采用本发明，燃烧时不会产生有毒气体，烟密度低，材料的阻燃性能、安全性能和力学性能优良。
The fireproof polyolefin composition has excellent fire retarding performance, safety performance and mechanical performance, and produces no toxic gas and less smoke during combustion.
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