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？
The key to this is the reduced density of the atmosphere, which affects how fast the ball moves through the air and also the bend of a spinning ball.
此处的关键在于大气的折合密度，它会影响球在空中穿越的速度以及旋转球的弯曲度。
Flexible OLED technology may be the key because it can provide the rich color and resolution density needed for a smaller screen without being a power hog and resists damage by its malleable nature.
而柔性oled技术可能是其中的关键，因为它能够提供丰富的色彩和高分辨率以适应较小屏幕的需要，同时更加节能抗磨。
The solutions for optical mass storage system and their principles are analyzed briefly, based on which, the key technologies for the improvement of the recording density are discussed.
在此基础上，扼要分析了现有提高存储器存储密度的思路及关键技术，给出当前国际先进水平的技术指标。
Electrolyte was one of the key points which made rechargeable lithium ion batteries with high power and energy density, long cycling life and desirable safety.
电解质是制备高功率密度和高能量密度、长循环寿命和安全性能良好的锂离子电池的关键材料之一。
The result shows that breathing intensity, particle diameter and particle density are the three key factors influencing the deposition of inhalational particles.
研究结果表明，呼吸强度、颗粒粒径以及颗粒密度是影响可吸入颗粒物沉积的关键因素。
The key techniques to insure the quality and high yield are adjusting density timing and managing different tree ages as the growth of plant in construction of GAP bases.
结论保证金银花优质、高产的关键技术是：随树龄增长，适时调整密度，在GAP基地建设中，对不同树龄植株要分类管理。
The flow rate, perforation radius and shot density are the key parameters influencing the pressure drop across gravel pack.
分析结果还表明，油井产量以及射孔孔径和孔密度是影响砾石层压降的重要因素。
Poplar is one of the main afforestation tree species in Shandong Provicne. Defining the best cutting period, afforestation density and mixed mode is the key technologies to promote biomass.
杨树是山东省主要造林树种之一，确定最佳采伐周期、造林密度、混交方式，是提高生物量的关键技术。
Holographic data storage is a key research direction in the optical data storage field due to its high storage density, high capacity and high speed of parallel data accessing.
全息光存储以其高密度、大容量、高速并行数据存取而成为光存储领域的一个重要研究方向。
This article discusses the key technology of improving compact disc information from three aspects: storage density, data transmission rate and superhigh density storage.
本文从光盘的存储密度、数据传输率和超高密度存储三个方面讨论了提高光盘信息存储的关键技术。
The precision and density of metal parts iso ne of the key problems in the application of rapid prototyping technology to Indus try.
金属件成形精度和密度是快速成形技术在工业应用中的关键问题之一。
The key factors that affect the carbon effect of plant landscape include plant landscape structure, design style, plant type and characteristics, plant size and plant density.
影响植物景观碳效应的主要因素有植物景观结构、设计风格、植物类型和特性、植物规格和种植密度等。
For engineering in desert, the key measures for ensuring the safety and operation of engineering facilities are to increase dry density and enhance seepage so as to avoid the high moisture content.
对于沙漠工程，提高沙漠砂的干密度，做好构筑物的防渗排水，避免地基含水量增高，是保证工程设施安全、正常运行的关键。
Key city's centricity is reflected by both population density and proportion of people whose occupations have motive function, while industry structure is the key factor to influence centricity.
一个城市的人口密度，从事具辐射功能行业的人口比例等均能反映其中心性的大小，而行业结构则是影响中心性的关键因素。
Electrolyte is one of the key materials of synthesis of lithium ion battery of high density of power, high density of energy, long circular life and good capability of security.
电解质是制备高功率密度、高能量密度、长循环寿命和安全性能良好的锂离子电池的关键材料之一。
One of the key factors influencing the output and quality of the Gynostemma pentaphyllum is the planting density.
选择合理栽植密度是提高绞股蓝产量和质量的技术措施之一。
As a result, some parameters of the key points have been got including the power spectrum density (PSD), the response variance, the gust response factor for load and displacement.
生成了若干关键点的功率谱密度(PSD)和响应的均方值，以及荷载风振系数、位移风振系数。
This paper discusses the structure, function, working principle and key operation technology of Haribodon cement slurry density auto control system.
介绍了哈里伯顿公司生产的水泥浆密度自动控制系统的构成、功能、工作原理和操作技术要点。
Density is one of key indexes for detecting and controlling the quality of compacted soil.
在路基压实质量检测和控制中，压实密度是重要指标之一。
This makes the power density of electronic components increase sharply, and whether it can be effectively cooled has become a key problem to be solved.
这促使电子元器件的功率密度急剧升高，能否进行有效地散热已经成为亟待解决的关键问题。
The non-planarity of a surface post electroplating process is usually dependent on variations of key layout characteristics including line width, line spacing and metal density.
铜电镀工艺后表面的不平整度通常取决于版图关键特征，包括线宽，线间距和金属密度。
Straw and stalk biomass whose density is lower belongs to compressible material. Press briquetting is the key that improves the capability of biomass production.
秸秆类生物质属于可压缩材料，其密度较低，致密化是提高生物质制品性能的关键。
Material is the key point of the super-density information technology.
材料是超高密度信息存储的关键。
The paper introduces theory and design of high density resistivity prospecting testing sys-tem, especially the programming multiplexor in its key components.
本文详细介绍了高密度电阻率测试系统，特别是其关健部件程控式多路转换器的原理及设计。
In this thesis, we propose a new method for tuning this key parameter, which is related to the cumulative probability density function of the radius of the codebook shell.
本文我们提出了一种新的调节此参数的方法，将其与码书半径的累积概率密度函数联系起来。
In this thesis, we propose a new method for tuning this key parameter, which is related to the cumulative probability density function of the radius of the codebook shell.
本文我们提出了一种新的调节此参数的方法，将其与码书半径的累积概率密度函数联系起来。
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