The Moon's mean density is much lower than that of Earth but is about the same as that of Earth's mantle.
月球的平均密度比地球低得多，但与地球的地幔密度大致相同。
The core of the Sun has a density almost 150 times the density of water on Earth.
太阳中心的密度相当于地球水体密度的一百五十倍。
Part of that evidence comes from its density and part from hundreds of chunks of rock, in the form of meteorites, that have been examined by Earth-bound scientists.
该证据的一部分来源于灶神星的密度，另一部分来源于数以百计以陨石形状存在的大块岩石，地球科学家们已对这些岩石进行过研究。
This layer - with an oxygen density probably about 5 trillion times less than on Earth - was "too thin to be remotely detected", said Ben Teolis of the Southwest Research Institute in San Antonio.
圣安东尼奥市西南研究所的本·特奥里斯（Ben Teolis）说，这个大气层——其含氧量可能不亚于目前地球的5万亿倍——是“如此稀薄一致难以遥远地探测。”
All darkness will be gone when Earth enters fourth density around the end of your calendar year 2012, but not all the glories of her Golden Age will be on that threshold.
所有的黑暗将在地球进入到第四密度的时候消失，时间在你们历法的2012年，但是并不是地球母亲所有黄金时代的荣耀就在那个门槛马上到来。
The earth has more mass and so part of this density is attributable to gravitational compression.
地球有更多的质量和密度，使这部分是由于引力压缩。
The great task that is before you now, Dear Ones, is the shattering of the band of deeply embedded negative thought forms that have formed as a field of low density energy that surrounds the Earth.
这项伟大的任务现在就在你眼前，亲爱的，正在震碎这帮深深嵌入的负面想法，而它们形成了一个围绕整个地球的稠密低级的能量场。
The earth free oscillation can be used to constrain structure of the earth interior, including velocity, discontinuity as well as density distribution.
用地球的自由振荡研究地球内部结构、速度间断面、密度分布等具有射线理论不可替代的优点。
The result was a remarkably accurate estimate of a parameter called the gravitational constant, and from that Cavendish was able to calculate the density and mass of the earth.
测量结果惊人的准确，他测出了万有引力恒量的参数，在此基础上卡文迪许计算地球的密度和质量。
The density, mass, and size compare favorably to that of Earth. But, the atmosphere and surface features differ markedly.
它密度、质量和大小都和地球差不多，但大气和表面却截然不同。
Even though Mars has almost the same land surface area as Earth, it has only half the diameter and less density than Earth - possessing roughly 15% of Earth's volume and 11% of its mass.
虽然火星的表面积相当于地球的陆地面积，但是它的直径只有地球的一半，密度也小于地球，只有地球体积的15%，地球质量的11%。
The effects of rare earth concentration, current density, and floated PTFE volume on PTFE content in coating are discussed.
探讨了稀土添加量、电流密度以及PTFE悬浮量对镀层中的PTFE含量影响。
The spacitial distributions of lightning acativities were shown in Google Earth (GE). Meanwhile, the relationship between lightning day and ground lightning density had been investigated.
总结了雷电流幅值的累积概率分布，研究了雷暴日与地闪密度之间的关系。
The material's low density, however, would be less of an advantage for buildings on Earth, because it would take a lot of aerogel to do the work of a steel beam in a building, for example.
该材料的低密度，用地球上的建筑物将不再是一个优点。例如，会需要超量的气凝胶来取代建筑用的钢梁。
The properties of rare earth materials activated diesel oil such as temperature, density and hydroxylic radical were discussed.
从柴油的温度、密度和自由基来研究柴油的性质。
Under the condition of quasi-equal level condition, density distribution of homogeneous layers are conflict with the real Earth density distribution.
在参数椭球的“准等位条件”下，匀质分层的密度分布并不符合地球的实际密度分布。
Ravine density, which is an important factor indicating the extent of the fragmentation of the Earth surface, plays a significant role in the research of soil erosion and landform evolution, etc.
沟壑密度是反映地表破碎程度的重要因子，在土壤侵蚀、地貌演变等研究中有重要作用。
Before earthquake occurrence, the crustal deformation causes redistribution of the earth density, so there occur some characteristic changes in the earth gravity field.
地震前，地壳变形引起地球密度重新分布，从而使地球重力场发生某些特征变化。
The result shows that it is more important to separate sea level height variation caused by seawater density change in the study of Earth dynamic problem.
表明，在研究许多地球动力学问题时，扣除海水密度变化引起的海面高变化至关重要。
The outer core of the earth, being in the plasma state with high temperature, high pressure, high density, and immersed in a strong toroidal magnetic field, can support varieties of plasma waves.
地球外核处于高温、高压、高密度的等离子体状态，可以支持多种磁流体波的激发和传播。
Fitting orthogonal polynomial method for characterizing the functional relationship between the dry density and moisture content of earth-fill in standard compaction test is presented.
提出了描述标准击实试验中土料干密度和含水量之间函数关系的拟合正交多项式方法。
Atmospheric drag is the main perturbation force on a low earth orbit satellite and is closely related to the variation of high atmospheric density.
大气阻力是低轨卫星主要的摄动力，与高层大气密度的变化密切相关。
The compact density of backfill earth in water transportation pipeline construction has to meet the requirements in design stage.
输水管道工程回填土压实度应符合设计要求。
The gravity field out of the earth depends on the interior mass density distribution of the earth.
地球外部重力场是由地球内部物质分布决定的。
The object of the present invention is to provide a rare earth magnet which enables to achieve a good balance between high coercive force and high residual magnetic flux density, and a magnet motor.
提供一种稀土类磁铁以及永磁电动机，该稀土类磁铁可以兼具高顽磁力和高剩磁通密度。
This paper has described the measure principles, the calibration method, the application test and data analysis of the nuclear-earth-base-density-moisture-gauge of type NDH-A.
本文阐述了ndh—a型核子土基密度、含水量联合测定仪的测量原理、标定方法、使用试验及测试数据的分析。
Taking the earth dam in Shandong Province as an example, the application of high-density resistivity technique to detect caves in earth dams is…
本文以山东省内的堤坝为例，介绍高密度电阻率法在土质坝体洞穴探测中的实际应用。
Taking the earth dam in Shandong Province as an example, the application of high-density resistivity technique to detect caves in earth dams is…
本文以山东省内的堤坝为例，介绍高密度电阻率法在土质坝体洞穴探测中的实际应用。
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