英语释义

1. the density of a given amount of particulate matter (such as a powder)
Industry experts say the feather fiber resists wet collapse and has a greater bulk density than conventional wood pulp fiber.
— Baltimore Sun, 30 Jan. 1996 Note: The bulk density of a substance is determined by dividing the total mass of the substance by the volume that it occupies. Since the mass is in the form of a number of discrete particles, this value can vary depending on how the particles are arranged and therefore is not necessarily dependent on the physical properties of the material.

片语

bulk accumulation density testing method松散堆积密度法

bulk electronic density基体电子密度

bulk packing density堆积密度

bulk charge density体电荷面密度

volume concentration体积浓度；体积密度

bulk volume density毛体积密度

Bulk electron density体电子密度

bulk-density meter容重计

bulk pour density堆积密度

英汉例句

• with an increase in the mass fraction of cmc, the bulk density of particles decreased.

  随着cmc添加量的增加，粉体的堆积密度减少。

• there exists a heat transfer mechanism of air convection in the range of bulk density of high loft nonwoven fabrics.

  在高膨松性非织造布的体积密度范围内，有空气对流传热机理存在。

• the method to measure the bulk density of compact bituminous mixture is always disputed among researchers.

  沥青混合料压实试件毛体积密度的测定方法一直在道路工作者中间存在争议。

• results show that styrene-butadiene emulsion can reduce required content of mixing water, accelerate initial and final setting and increase bulk density of gypsum.

  结果表明：羧基丁苯乳液具有良好的减水作用，使建筑石膏初凝和终凝时间有所提前，并在一定程度上增加了建筑石膏的体积密度；

• bulk density varies significantly with moisture content and particle size of fuel.

  体积密度显着不同水分含量和颗粒大小的燃料。

• in the experiment using corundum aggregate, the specimens prepared with high ferric oxide brown corundum aggregate has the highest bulk density and strength.

  在使用刚玉骨料的试验中，采用高铁棕刚玉的试样的体积密度和强度均最高。

• the porosity, bulk density and cold crushing strength of the refractory samples were determined.

  讨论了气孔率、体积密度和常温耐压强度与电熔氧化镁加入量之间的关系。

• the results indicate that stirring evidently affects the formation and morphology of xonotlite secondary particles, and further affects the dry shrinkage and bulk density of xonotlite products.

  结果表明，搅拌对上述性质的影响非常显着，并且进一步影响硬硅钙石制品的干燥收缩率及体积密度。

• the difference between amount per unit volume and bulk density of refractory castable in definition is pointed out, a testing method of amount per unit volume of refractory castable is introduced.

  指出了耐火浇注料单位体积用量与体积密度定义上的区别，介绍了一种测试耐火浇注料单位体积用量的试验方法。

• through the analysis of mechanical properties of the specimens, the relationship between the fracture strength and bulk density was characterized in a linear equation.

  通过对试样力学性能的分析可知，推导出了材料断裂强力与体积密度的关系式。

• porosity of hardened mortar has no relation with air void content, but a little relation with bulk density of fresh mortar.

  硬化砂浆的孔隙率与新拌砂浆的含气率没有对应关系，与新拌砂浆的体积密度反倒有一定的关系；

• however, if the sintering temperature is too high, the bulk density would decrease.

  若烧结温度过高，则会使陶瓷由于过烧而形成缺陷，降低陶瓷的体积密度。

• so, when the finished particle size distribution, residual moisture content, bulk density and particle shape must conform to precise standards.

  因此，当成品的颗粒大小分布、残留水份含量、堆积密度和颗粒形状必须符合精确的标準时。

• if the sintering temperature increases properly, the bulk density would increase and the crystal grows into better shape.

  研究发现，随着烧结温度升高，陶瓷体积密度增大，有利于晶体的生长以及陶瓷致密化。

• if the sample is weighed, its bulk density can also be calculated.

  如果把样品称重，还可以确定样品的体积密度。

• besides this, cultivation of excellent variety that has better performance in wood properties including bulk density and fiber length also has been gained more and more attention from society.

  生长量是杨树的重要性状指标，但除此之外，容积密度和纤维长等在材性上表现较佳的优良品种的培育也越来越受到社会的关注。

• the result shows that the compressive strength at normal temperature of impregnated samples is raised in varying degree, their bulk density is increased and the porosity is decreased.

  制得高强度耐火粘土砖的试验结果表明：浸渍处理后的试样，常温耐压强度均获得了不同程度的提高，体积密度增加，气孔率下降。

• the apparent porosity and water absorption were the lowest, the bulk density and heat-resistant property were the highest after dipping for 4 times.

  材料性能随浸渍次数增加而优化，浸渍4次的显气孔率和吸水率最低，体积密度和热稳定性最高。

• the paper mainly introduced the choice of comprehensive bulk density for earthworks mixture, and combined with the practice proposed some relative problems.

  用数理统计的方法对土石混合料综合毛体积密度的选取作一简要介绍，并结合实际提出路基施工中应注意的问题。

• the real density of needle coke strongly influences the bulk density of graphite electrodes: a coke of high real density tends to yield low density rods.

  针状焦的真密度强烈地影响着石墨电极的体积密度：真密度高的焦炭往往产生低密度的电极。