1) root mass density
根质量密度
1.
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。
2) root count density
根量密度
1.
The results are as follows: the loblolly pine root count density increases in the growing season and reaches its climax in January or February, the end of the growing season.
结果表明 ,火炬松新根的根量密度随时间呈增长趋势 ,在生长季末的 1、2月份达到最大。
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) Root biomass density
根生物量密度
6) mass surface density
质量面密度
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