查询词典 bulk density

A study on the dynamics of soil bulk density,soil organic matter,soil microbes and other soil ecological factors under different human disturbance (logging and assart,logging but without assart,control)were conducted in the Ziwuling secondary forest area.

：对黄土高原陕西子午岭次生林区不同人为扰动条件下林地土壤容重、有机质、团聚体和微生物等进行了研究。

It can be seen that the bulk modulus depends mainly on electrons per atomic volume and mass density, while covalent structure of chemical bonding and N content make more contribution to theoretical hardness, and appropriate content N—N covalent bonding in the same direction tends to increase the shear modulus of nitrides.

说明在Tc的氮化物中，其体弹模量与材料的晶体结构、平均每个原子上的电荷密度和材料的质量密度有关；化学键的共价性结构和氮元素的含量对理论计算硬度有正作用；而剪切模量的极大值则与其层状结构及体系中一定量的方向基本一致的N—N键相关。

Slope direction, slope position and the bareness degree of rock have few influences upon soil nutrient and soil bulk density.

坡向、坡位和岩石裸露度对土壤养分和容重几乎没有影响。

The bulk density of these peels of root and crops decreased with the increases of milling time could be caused by porosity or capillarity on the surface.

三种样品粉末之体积密度均随研磨时间延长而降低，推测可能原因是三种果皮在微细化处理之后，其表面产生多孔状或表面的毛细现象所致。

The elastic constants of bulk lithium with hexagonal close-packed structure under high pressures have been calculated, by using Density Functional Theory and the relationship between stress and strain.

採用密度泛涵理论第一原理贋势方法，利用应力和应变的关係计算了压力下六角密堆结构金属鋰的弹性常数。

The coefficient of variation of bulk density and field capacity fluctuate with depth of soil.

饱和含水量和田间持水量的块金值在剖面上变化趋势相同。

In comparison with the bulk material,smaller magnetization,larger coercive force and anisotropy energy density for nanoparticles were observed.

相对块体材料，纳米颗粒具有较小的磁化强度、较大的矫顽力和各向异性能密度。

The effects of different temperatures on compressive strength and bulk density were studied.

主要探讨了不同的烧结温度对试样的耐压强度和体积密度的影响。

The results indicated that the soil physical fertility characteristic of super high-production cornfield was high, mainly display in the topsoil was deep, soil bulk density changed between 1.01-1.26 g/cm3, disarrangement rate of soil structure was...

研究结果表明，超高产玉米田土壤物理肥力特性较高，主要表现在耕层较深厚，土壤容重变化在1.01～1.26g/cm3，土壤的结构破坏率较低；在土壤的化学环境特征方面，土壤碱解氮、速效磷、速效钾等均未表现出明显的变化规律；所有超高产田的土壤阳离子交换量均不同程度地高于普通生产田，这与超高产田的定向培育有直接关系；一些超高产田有机质低于普通生产田，其原因与超高产田氮素施用量较高、促进了土壤有机质矿化有关。

Results The purity as well as removal rates of egg albumin and foreign protein of virus bulk purified by Sepharose 4FF gel chromatography were slightly higher than those by sucrose density gradient centrifugation.

结果 层析法的纯度、卵清蛋白及杂蛋白去除率略高于蔗糖密度梯度离心法，而蔗糖密度梯度离心法的病毒回收率优于层析法。

It has to be computed by the host for the actual clock rate.

主控制器可以用来计算实际的时钟速率。

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