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。
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。
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。
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？
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。
Average density and density distribution of electron and resonance Xenon are presented to study the process of discharge.
研究了放电过程中各单元内电子、氙谐振态浓度分布和其平均浓度随时间的变化情况。
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。
The densities of the terrestrial planets average about 5 times the density of water, whereas the Jovian planets have densities that average only 1.5 times the density of water.
类地行星的密度的平均值大约是水的密度的五倍，而类木行星的密度平均值只有水的密度的1.5倍。
The average population density of the world is 47 persons per square mile.
世界平均人口密度为每平方英里47人。
But if the region has a strange shape or if a density is not homogeneous, if parts of it are heavier then you will get whatever the weighted average will be.
但如果这区域的形状很特殊，或者密度不均匀，也就是某些部分比较重，那就需要求加权平均值。
Ni : Average population density in area i. To simplify the analysis, Earth’s surface is divided into a grid of squares i, and the distribution is assumed to be uniform in each.
Ni：指i区的平均人口密度，为了简化分析，地球表面被按照网格分成多个i区，每个区的分布假定是统一的。
In a study published in the journal Obesity Reviews, they calculated the average energy density of menus at McDonald's, KFC and Burger King, using nutritional data from the fast food chains' websites.
《肥胖评论》杂志发表了他们的研究结果，他们通过快餐连锁网站上的营养数据计算了麦当劳、肯德基和汉堡王食品的平均能量密度。
Figure 1: Normal probability density function, which illustrates that actual observations may vary from the expected (or average).
图1：正态概率分布函数，它表明实际的观测值可能会偏离期望值(或者平均值)。
The study found that the Mongolian capital Ulan Bator had an annual average PM10s density of 279 micrograms per cubic meter, followed by another west Iranian city, Sanandaj, with 254 micrograms.
研究发现，蒙古首都乌兰巴托年均可吸入颗粒物浓度为每立方米279微克，其后是又一个伊朗西部城市，萨南达杰，浓度为每立方米254微克。
It is proved that the fundamental diagram of the average traffic flow speed as the function of the car density for the new model is exactly the same as for fi model.
证明新模型的基本图，即车流渐近稳态的平均速度与道路上的车辆密度之间的函数关系与FI模型的完全相同。
Reasonable matching of wafer and wire: the advanced matching of wafer improves average voltage in electric field and current density of wafer corona, which the dedusting efficiency is higher.
板线匹配更合理。先进的板匹配，有效地提高了电场平均电压和板电晕电流密度，收尘效率更高。
Looking at 671 women with an average age of 55, the researchers said they were able to predict osteoporosis conditions to the same extent as the bone density measurements.
研究者称：通过对671名平均年龄是55岁的妇女的研究发现，他们有能力在骨密度测量同样程度下预测骨质疏松症的情况。
If intermittent small scale breaking is occurring, the average energy density is limited by conditions near the long wave crests.
如果间歇性的小尺度破碎正在发生，平均能量密度就要受到长波波峰附近状况的限制。
With an increase in female parasitiod density, there was a corresponding increase in pupal parasitization rate and the average number of progeny per parasitized pupae.
随着雌蜂密度增加，寄主蛹的寄生率和平均每头寄生蛹中的子蜂数相应提高，但平均每雌产的子蜂数则逐渐减少。
The results show that the average organic carbon density in cultivated soils has experienced a carbon gain during the period.
结果表明，总体上我国实测点位（或区域）耕作土壤平均有机碳密度在此期间略有增加。
Using this interferometer, the time variation of the average electron density of a low pressure pulsed plasma has been measured and the experimental result is quite satisfactory.
用此干涉仪测量了低气压脉冲放电产生的冷等离子体的平均电子密度随时间的变化，取得了较为满意的结果。
The average spectral density functions under MAS condition were derived from various models of jump motion and models of freely diffusive motion.
根据不同的跃迁运动和自由扩散运动模型导出了魔角旋转条件下的平均谱密度函数。
The average spectral density functions under MAS condition were derived from various models of jump motion and models of freely diffusive motion.
根据不同的跃迁运动和自由扩散运动模型导出了魔角旋转条件下的平均谱密度函数。
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