1) natural mass density
天然质量密度
1.
Based on the statistics and analysis of 404 groups test data of marine clayey soil(Q4m)in Dalian sea area,the experimental relationships are established between the natural water content ωo and the natural mass density ρo and dry mass density ρd of marine clayey soil.
该文通过对大连海域第四系全新统海相粘性土404组试验数据的统计与分析,建立了第四系全新统海相粘性土天然含水率ωo与天然质量密度ρo、干密度ρd的经验关系。
2) natural dry density
天然干密度
1.
The stipulation to experimental project of sand and gravel used by concrete aggre-gate in "The Natural Building Material Survey Specification of Hydraulic and Hydroelectirc Engi-neering" (hereinafter Specification) is that, neither perliminary nor detailed check, each group testof natural dry density must be done.
《水利水电工程天然建筑材料勘察规程》（SDJ17－78）对混凝土骨料用砂砾石的试验项目规定：无论初查或详查，天然干密度每组都应做试验；该规程对“混凝土用砂砾石质量技术要求”又不需要天然干密度指标；而该指标的算术平均值仅用于分级储量计算。
3) Mass density
质量密度
1.
Dynamic mass density and acoustic metamaterials;
动态质量密度和声学超常介质
2.
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。
3.
%) 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。
4) quality density
质量密度
1.
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。
5) frequency of natural fractures
天然裂缝密度
6) Daylighting quality
天然采光质量
补充资料：非密度制约因素(见密度制约因素)
非密度制约因素(见密度制约因素)
l焦非密度制约因素见生态因素、密度制约后
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条