Low average population densities are characteristics of most underdeveloped countries.
平均人口密度低是大多数不发达国家的特点。
As densities increased, domestic architecture became larger, culminating in crowded pueblos.
随着密度的增加，住宅建筑变得更大，最终形成拥挤的村庄。
The cultivation of crops has expanded into progressively drier regions as population densities have grown.
随着人口密度的增长，农作物的种植已经扩展到了越来越干旱的地区。
Rock lobsters prey on sea urchins, and increased rock lobster densities coincided with significant decreases in urchins.
岩石龙虾以海胆为食，而岩石龙虾密度的增加正好与海胆数量的显著减少相吻合。
After several generations of population growth, people packed the landscape in densities so high that communal pueblos may have been a necessary outcome.
经过几代人的人口增长，人们以如此高的密度挤满了这个地区，以至于公共聚居地的出现可能是一个必要的结果。
By compiling a map of seismic velocities from thousands of earthquakes across the globe, they can also begin to map temperatures and densities throughout the mantle.
通过编制全球数千次地震的地震速度图，他们还可以开始绘制地幔的温度和密度图。
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。
However, near hydrothermal vents, areas of the ocean where warm water emerges from subterranean sources, live remarkable densities of huge clams, blind crabs, and fish.
然而，在海底热液喷口附近，也就是温暖海水从地下涌出的地方，生活着大蛤、盲蟹和鱼类，数量非常庞大。
Crown of thorns starfish normally live in high population densities.
刺冠海星通常生活在聚居的环境中。
The push pin color scheme shows population densities based on the color spectrum.
pushpin颜色方案基于色谱显示人口密度。
With no natural enemies, their densities reached 10 to 100 times that of Argentina.
因为没有天敌，火蚁的种群密度达到阿根廷的十倍甚至百倍。
The content of the survey involved the volume density, surface and length densities.
内容涉及到各种组织的体积分数、面积密度、长度密度等。
In large parts of America, where population densities are lower, it would be much costlier.
而在美国，由于人口密度更低，投递费用还会更高。
Many branches were closed, and by 2006 Sweden had one of the lowest branch densities in Europe.
许多分行关闭了。到2006年，瑞典成为欧洲分行密度最低的国家之一。
These major arms have the greatest densities of both young, bright stars and older, so-called red-giant stars.
这些主要臂上有最大密度的年幼明亮恒星和较老的红巨星。
However, at times of high vector densities the relative importance of mosquito-to-human transmission may increase.
不过，在媒蚊密度较高时，蚊虫向人传播病毒的相对重要性可能增加。
The physicists say the data will be useful when calculating, for example, how liquids seep through soils of different densities.
物理学家说这个数据在计算像液体渗过不同密度的土壤这一类的问题时很有用。
Some metal alloys, such as those based on aluminum, have low densities and are used in aerospace applications for fuel economy.
某些金属合金，例如铝基合金，其密度低，可用于航空航天以节约燃料。
Factors relating to poultry densities and farming systems seen in different countries may also influence the risk that human cases will occur.
与在不同国家看到的家禽密度和饲养制度有关的因素也可影响发生人间病例的风险。
Batteries with ceramic paper electrodes could therefore be charged quickly, but also discharged quickly to allow for high current densities.
使用陶瓷纸作电极的电池也因此能够快速充电，但在高电流密度时同样会快速放电。
In general, thin films have higher energy densities, larger strain capabilities, and more rapid response times than their bulk counterparts.
通常薄膜材料具有比其块材更高的能量密度、更大的应变能力以及更快的响应时间。
I determined that densities and biomass of herbivorous mammals in Nagarahole were comparable to some of the best East African Savannah areas.
我在这里发现，食草哺乳动物的种群密度与生物量，堪与状况最好的东非大草原地区相比。
The group of about 1,000 islands also has one of the lowest population densities in the world, making services difficult and expensive to deliver.
所罗门群岛约有1000座岛屿，是世界上人口密度最低的国家之一，这使得提供服务的难度大、成本高。
To maintain a consistent message that finding bugs is good, management must promise that defect densities will never be used in performance reports.
为了维持检查缺陷是积极的这样一种理念，管理人员必须要承诺缺陷密度不会进入到性能报告之中。
Sharp, one of its rivals, recently said that it had developed new microfabrication techniques to build DMFCs with the highest power densities yet achieved.
夏普，它的一个竞争对手，最近说已开发出了新的微制造技术，用来制造迄今为止功率密度最高的DMFC。
To keep up speed on the way to the wall, the industry has begun building three-dimensionalchips by stacking circuits on topof one another to increase densities.
在冲向这堵墙的过程中，为了保持速度，通过把集成电路堆叠起来增加密度，闪存业已开始制造三维芯片。
To keep up speed on the way to the wall, the industry has begun building three-dimensionalchips by stacking circuits on topof one another to increase densities.
在冲向这堵墙的过程中，为了保持速度，通过把集成电路堆叠起来增加密度，闪存业已开始制造三维芯片。
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