Variations in the composition of the planets are largely responsible for the density differences.
行星构成成分的不同是造成密度差异的主要原因。
This shows the old and new Shanghai density differences.
可见新旧上海人密度差异。
For example: the density differences and related pressure drop over the liquid layer must be scaled correctly.
比如，水和铝液密度的差异和在不同液位高度时相对压降必须正确地定标。
The bridge was actuated by sinusoid sweeping frequency wave, and then the power spectral density differences between the undamaged and damaged bridge were analyzed.
利用正弦扫频波激振钢桥，分析其损伤前后加速度反应功率谱密度的变化。
The computation results showed that the effect of density differences when velocity of flow was small was obvious to the boundary of laminar flow in the elevation difference pipeline.
结果表明，在大落差管道，流速不大的情况下，密度差对层流边界层影响比较明显。
Experts also cautioned that subtle gender differences in connections can be thrown off by normal disparities in brain size between men and women and in the density of brain tissue.
专家们还警告称，连接方面微小的性别差异会被当成男女大脑尺寸及脑组织密度方面的正常差异而被摒弃。
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.
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。
Results: There were differences in lesion shape, density, boundary, change around the lesion and mediastinum hilus of lung between atypical tuberculosis and lung cancer.
结果：不典型肺结核与肺癌在病灶形态、密度、边缘、灶周改变及纵隔肺门等表现均有不同。
The significant differences also existed in wood basic density, fiber length and fiber diameter at different tree height.
不同树干高度处的平均木材密度、纤维长度和纤维宽度存在显著差异。
It indicates that there are significant differences for microfibril Angle, basic density, bending strength and rate of shrinkage of poplar 63 and poplar 69 by variance analysis.
方差分析表明：63杨、69杨微纤丝角、基本密度、抗弯强度和干缩率差异显著，说明63杨和69杨受滩地类型影响较大。
There were no clear differences in density or distribution of the macrobenthos between spring and fall.
春秋季生物量及栖息密度等值线分布趋势无明显变化。
Meanwhile, there were not significant differences in wood air dry density, mechanical strength and cell wall percentage of intra provenance.
种源内木材气干密度、力学强度及胞壁率差异不显著，管胞长、宽和壁厚的差异均显著且高于种源间的差异。
Planting density has significant effects on fiber morphology, physical and chemical properties of Lalix olgensis wood. Except growth-ring width, remarkable differences was found in other indexes.
初植密度对落叶松人工林的纤维形态特征、物理特征及化学特征有重要的影响，除生长轮宽度外，其它各指标差异显著；
The bone mineral density of regular exercises groups of males and females of Dalian youth were higher than those of irregular exercises groups, and there were significant differences(P<0.05).
大连男女青年中经常参加运动的骨密度比不参加运动的骨密度高，并差异有显著性（P<0.05）。
Further qualifications require that the two fluids be miscible and that the density difference be a function of differences in temperature.
另外的条件要求两种流体可以掺混起来，并要求两种流体的密度差是温度差。
No significant differences among food concentrations in the mean density and the production of males were observed.
雄体的平均密度和生产量在各食物浓度下无显著差异。
Compare to those in plain city, there re characteristic differences such as high density and complex form of interchanges layout and form in Chongqing metropolitan area.
重庆市主城区立交节点布局和立交形式与平原城市相比存在密度大、形式复杂等方面的特征差异。
The pollen viability by using different culture method had differences and there were a certain correlation between the pollen density and pollen viability.
用不同的培养方式时棕榈花粉生活力存在差异，花粉培养密度与花粉生活力存在一定相关性；
The differences between the two reciprocal equations of the competition-density effect in nonself-thinning populations and self-thinning populations were analyzed theoretically.
对在无自然稀疏和有自然稀疏状况下有关植物群落的竞争密度效应的两个倒数方程的差异进行了理论分析。
The investigation result showed that there are great differences in tiller number as the maturity of varieties, transplanted density and seedling quality are different.
对不同时期出生的分蘖挂牌观察表明：因品种熟期、插植密度、秧苗素质的不同，分蘖出生迟早、数量及成穗率差异均较大。
Due to the thermal-physical and optical differences between bonds and abrasives, suitable pulse power density is selected to remove bonds and protrude abrasives realizing the selective removal.
由于结合剂和磨粒之间存在热物理、光学性质差异，可通过选择合理的脉冲激光功率密度去除结合剂，凸出磨粒，实现选择性去除。
Velocity and salinity(or density) differences between the wake area and non-wake area of a surface ship may be measured with an electric conductivity probe.
在舰船尾流区与非尾流区之间存在显著的速度差和盐度（或密度）差，利用电导率探头可获得对应于这些差别的尾流电导率信号。
The differences of density, odor and color for wood vinegar collected at different smoke temperature were very little.
不同烟温度下收集的木醋液密度、气味、颜色差别不大。
Despite of great differences in their structures and work theory, they all have a micro-firebox and need a good combustion system to ensure a high energy density.
这两种微动力机电系统在结构和工作原理上有较大差异，但是都具有微型燃烧室，都需要一个良好的燃烧系统保证高能量输出。
The background samples are chosen by thresholding inter-frame differences, and the Gaussian kernel density estimation is used to estimate the probability density function of background intensity.
通过相隔固定的帧差值阅值化得到背景样本值，并采用高斯核密度估计方法计算背景灰度的概率密度函数。
There are no vertical differences on soil moisture dynamics configured salix pasmmophia forest, while the mid-density salix pasmmophia forest has the lowest soil moisture.
不同配置模式沙柳林年均林地土壤含水量垂直变化无显著差异，但中密度沙柳纯林内土壤含水量最低。
The results showed that there were significant differences of appearance, distribution of particle size, density and fluidity among different nutrients.
试验观察了面粉专用营养素单体和复配营养素的形态、粒度、比重、流动性以及不同混合时间的混合均匀度。
The differences of survival and reproduction rates of Oncomelania snails between low and high density groups in different endemic areas were statistically significant (P<0.05).
不同流行区钉螺低密度及高密度组间的存活率和繁殖倍数差异均有统计学意义（P<0.05）。
Finally we discuss the differences of turn-on voltage, field emission current density and the stability of field emission display because the differences of the cathode of field emission.
并讨论由此而导致的开启电场的变化、场发射电流密度的变化以及亮度和稳定性的变化。
Finally we discuss the differences of turn-on voltage, field emission current density and the stability of field emission display because the differences of the cathode of field emission.
并讨论由此而导致的开启电场的变化、场发射电流密度的变化以及亮度和稳定性的变化。
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