Dynamic mass density and acoustic metamaterials;
动态质量密度和声学超常介质
Considering non-spherical particles,starting from particles size distribution,the concept of the average mass was put forward,and the theoretical formula for calculating mass density of non-spherical particles was derived.
基于米氏(Mie)散射理论得到了粒子计数器测量球形颗粒物质量密度的计算公式。
%) and Al-28%Mg-14%Zn alloys used for thermal energy storage applications,such as the specific heat capacity including solid and liquid state;the mass density in the temperature range 30～500℃;the melting temperature and the latent heat of fusion.
利用差示扫描量热仪(DSC)和H-90型膨胀仪,对潜热储能材料A l-34%Mg-6%Zn和A l-28%Mg-14%Zn合金的热物性参数进行了测定,如固、液态时的比热容,30~500℃间的质量密度,熔化温度和熔化潜热等。
The design method and function characteristics for the single hydraulic prop airtight quality detecting device are introduced.
介绍了基于RS-485总线的单体液压支柱密封质量检测仪的设计方法和功能特点,它克服了原有检测仪的不足,提高了单体支柱密封质量检测的工作效率和自动化水平。
The single hydraulic prop airtight quality detecting devices have been had a great deal of applications in coal mines all over the country,however,an unified use standard has not been made.
单体液压支柱密封质量检测仪已在全国煤矿得到了广泛的应用 ,但并没有统一的使用标准 ,针对在实验室、煤矿现场的试验以及近年来各矿所检测的一些数据进行了综合分析 ,提出了合理的建议 ,确保检修支柱的密封质量 ,提高煤矿的安全生产。
A mare on the moon having rock of greater density than that of the surrounding area, thus exerting a slightly higher gravitational force.
质量密集月球上的阴暗部，其内部岩石比周围地区的岩石的密度大，因此产生略大些的引力
Mass is indeed a very compact form of energy!
质量的确是能量的一种非常密集的形式。
The Effect of Different Wet Bulb Temperature at the Color Fixing Stage on Tobacco Quality under Loose-leaf and Bulk Curing Condition
定色阶段湿度对散叶密集烘烤烟叶质量的影响
density:The quality or condition of being dense.
浓密:浓密的质量或情况.
According to statistical analysis of deposit concentration areas, they show ordered variable relationship between assemblages of ore deposits and associations of ore-controlling geological bodies.
从矿床密集区的统计分析，它们是矿床集合与控矿地质体集合上升有序变量关系。
White dwarfs compact much of the mass of the stars into a volume the size of the earth.
白矮星将其大部分质量紧密地聚集在相当地球大小的范围内。
The Study of Physiological and Biochemical Traits and Aroma Quality of Flue Cured Tobacco Leaves during Bulk Curing Process;
烤烟烟叶在密集烧烤条件下的生理生化特性和香气质量的研究
The Chinese army strengthens itself by relying on science and technology, and strives to make the transition from a numerically superior type to a qualitatively efficient type, and from a manpower-intensive type to a technology-intensive type.
中国军队依靠科技强军，实现军队由数量规模型向质量效能型、由人力密集型向科技密集型的转变；
They are strongly absorbed by the dense weapon materials and only a small proportion actually emerges.
它们被密集的武器物质大量吸收，实际上只有很小的一部分被发射出来。
The Debye mass is a very important physical parameter which describes the collective motion of a hot and /or dense plasma.
德拜质量是一个非常重要的物理参数，它描述了热密等离子体的集中效应。
An Empirical Analysis and Game on the Quality of the Utilization of FDI in Hunan Province;
湖南利用FDI质量的实证分析及对策——基于技术密集型产业、R&D活动的视角
Animation by its nature is labor-intensive.
动画从本质上说是劳动密集型的。
Elementary Discussion on Excavation of Deep Foundation Pit Intensively Internally Supported in Silty Soil
浅谈淤泥质土密集内支撑深基坑开挖
Study for Safety Capacity in Location of Dense Urban Mass;
城市人口密集场所的安全容纳量研究
The mass of one unit of volume of a material is called its density.
物质单位体积的质量称之为密度。
Effects of Fertilization and Planting Density on Population Quality and Wheat Quality of Spring Wheat
肥密对春小麦群体质量及品质的影响
intensive agriculture [farming]
密集 [集约] 农业
They concentrated their efforts on turning out more products of higher quality.
他们集中力量制造更多高质量的产品。