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。
It can be improved by rebuilding soil quality density and reduce soil penetrability.
0×10-7cm/s要求,可通过改造土的质量密度,减小土的渗透性来满足要求,击实试验与渗透试验是一种行之有效的检测方法,在此项检测中成功地进行了应用。
Line mass-density measurements of gas puff Z-pinch load using high sensitive laser interferometer;
用高灵敏度激光干涉仪测量Z-pinch喷气负载质量线密度
Based on the measured data from the winter wheat fields in Zhengzhou of Henan Province,the vertical distribution of root length density(RLD)and root mass density(RMD)were analyzed.
根据在郑州进行的冬小麦根系田间实测资料,研究了根长密度和根质量密度在砂壤土中的垂直分布。
Quark Mass Density-and Temperature-dependent Model for Strange Quark Matter
奇异夸克物质的夸克质量密度温度相关模型(英文)
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。
Investigation of Improving HD-PCB Substrate Packaging Quality
改善PCB高密度基板封装质量的研究
Relation of Quality of Platycladus orientalis Seedling to Planting Density
侧柏育苗密度与苗木质量的关系研究
Study on the Effect of Planting Density of Malting Barley on Its Yield and Quality
啤酒大麦种植密度对产量品质的影响
Effect of Planting Density of Maackia amurensis Rupr. on Seedling Quality for sowing in ridge
山槐垄播不同密度对苗木质量的影响
Effect of electrorefining with high current density on cathode copper
高电流密度电解对阴极铜质量的影响
WEIGHT : Density of 2.1 g/cm3 density can be varied by aggregate addition.
质量：密度为2.1克/立方厘米，密度随着添加量的增加而改变。
dielectric (flux) density
电通(量)密度，电移位密度
A position in a scale of size, quality, or intensity.
等级，级别以尺寸，质量或密度衡量所处的位置
Correlative analysis of appropriate exposal dose, CR film quality and film density
曝光量、CR影像质量与照片密度相关性分析
Mass flow information can be secured by using a densitometer.
质量流量的数据可借助于密度计而获得。
A swift decline or decrease, as in quality, quantity, or intensity.
下跌在质量、数量或密度上的迅速下降或减少
Effects of Density and Nitrogen Amount on Yield and Quality of High Starch Maize;
密度及氮肥量对高淀粉玉米产量与品质的影响
The Quantitative Relation between Density of Solid Elemental Substance and Atomic Weight、Atomic Radius;
固体单质密度与原子半径和原子量的定量关系
Effects of Different Density on Yield and Population Growth Quality in Colored Rice
不同栽插密度对有色稻产量和群体质量的影响
On the Quality of Urban Residential from a Point of Density;
从居住密度的角度研究城市的居住质量
density:The quality or condition of being dense.
浓密:浓密的质量或情况.