The average density of interstellar material in the vicinity of our Sun is 1,000 to 10,000 times less than the best terrestrial laboratory vacuum.
在我们的太阳附近，星际物质的平均密度比最好的地球实验室真空还要低1000到10000倍。
When scientists first analyzed the wood of vintage Cremonese violins in compared with the modern violin wood, they calculated the average density and found no difference.
当科学家们第一次将古典克雷莫纳小提琴的木材与现代小提琴的木材进行对比分析时，他们计算了平均密度，并没有发现区别。
One of the key scientific questions in cosmology today is: what is the average density of matter in our universe?
今天宇宙学的一个关键问题就是：宇宙中物质的平均密度是多少？
Same average density can be used to estimate stem dry weight of the same species of trees.
据此，在利用材积密度法估计树干干重时，相同树种不同个体可以采用统一的平均密度值。
It is shown that the average density of the initial state determines the large time behavior of the system.
证明了积分意义下初始状态的平均密度决定了系统的大时间行为。
Under some level of error, the theoretical sampling number should decrease as the average density of the mite increases.
在相同误差水平，理论抽样数随平均虫口密度的增加而减少。
Applying the probabilistic method, the average density, the average depth and the deepest depth of pitting are calculated.
运用概率统计方法，计算了点蚀平均密度、点蚀平均深度和最大点蚀深度。
The results show that the bulk average density by electric resistance sintering is higher than that by median frequency sintering.
研究结果表明，电阻烧结坯整体平均密度要高于中频烧结坯密度。
Regulation of self- thinning is that relationship between DBH and average density of population accords with negative power function.
樟子松种群自疏规律为：平均胸径与密度的关系符合负幂函数模型。
The average density of endothelial cells and the percentage of hexagonal cells of corneal epithelium were observed before and after operations.
使用角膜内皮显微镜观察手术前后角膜内皮细胞的平均密度、六边形细胞所占百分率。
The storage module decreases with increasing the average density of microholes, but it increases with increasing the average area of microholes.
发泡橡胶的储能模量随着微孔平均密度的增加而减小，而随着微孔平均面积的增加而增加。
Most cases showed average density on ct. Orbital bone compression or defect was seen in 18 cases, bone destruction with hyperostosis bone sclerosis in 12 cases.
CT表现大多数为密度均匀，眼眶皮质受压，凹陷18例，骨皮质破坏伴硬化肥厚12例。
Both the average density of bubble fluid above the pump intake and flowing pressure can be obtained using the theory of Newton mechanics, hydraulics and kinematics. The method ha...
利用牛顿力学、水力学、运动学原理，计算出泵吸入口以上泡沫流体平均密度和流压，并应用于实际生产及二流量试井，取得了好的效果。
Both the average density of bubble fluid above the pump intake and flowing pressure can be obtained using the theory of Newton mechanics, hydraulics and kinematics. The method ha...
利用牛顿力学、水力学、运动学原理，计算出泵吸入口以上泡沫流体平均密度和流压，并应用于实际生产及二流量试井，取得了好的效果。
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