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 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。
Experiments show that the accurate equation can express the relationship of porosity and bulk modulus of porous medium well.
试验结果表明，精确公式能够很好地表达多孔介质孔隙率与体积模量之间的关系。
An amende nt should decrease bulk density increase toltal porosity and incr ease water and air content.
改良剂能降低容重，增加总孔隙度，增加水和空气的含量。
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。
Then, the bulk density, porosity, the type of pore and clay content in the soil affected the soil moisture diffusivity.
土壤容重、孔隙大小、孔隙类型及土壤颗粒组成中粘粒含量对土壤水分扩散率都有一定的影响。
Then, the bulk density, porosity, the type of pore, particle constitute and organic carbon in the soil affected the soil moisture diffusivity.
土壤颗粒组成、容重、有机质、孔隙率影响土壤持水性能。
The relationship between bulk modulus, macro-compressibility and porosity is also given.
并给出了体变模量、宏观压缩系数和孔隙度之间的关系式。
Correlation coefficients between the thermal conductivity and bulk density, open porosity, permeability and raw material grade was obtained respectively.
另外，还计算了导热系数与体积密度、显气孔率、透气度和原料等级之间的相关系数。
The results indicated that green coverings improved soil physical characteristics, soil bulk density decreasing by 5.68% and the soil porosity increasing by 6.15%.
结果表明：生草可改善土壤物理性状，使土壤容重平均降低5.68%，总孔隙度提高6.15%。
The soil bulk reduced, the soil porosity and permeability improved.
地块的土壤容重减少，提高土壤膨松度，增强土壤透气性。
Vermiculite adding can compensate for part of the ceramic volume contraction, improve shapes and structure of pore, improve porosity, lower bulk density and improve the rate of powder resistance.
蛭石的添加，可以补偿部分陶粒体积收缩，且能改善陶粒孔型和结构，提高显气孔率，降低体积密度，提高陶粒抗粉化率。
Upward along the slope, soil pH value, organic matter content, total porosity and capillary porosity increase, and soil bulk density decreases.
土壤容重沿坡面向上减小可能主要与土壤有机质含量、粘粒含量、结构状况和松紧度以及孔隙度状况等有关。
With the increase of sintering temperature, the apparent porosity of sample decreases, while bulk density, hardness and compressive strength increased.
随烧结温度的升高，材料的显气孔率降低，而体积密度、硬度和抗压强度均增加。
The results show that the porosity and water absorption decrease and the bulk density and bending strength increase, along with the sintering temperature raising and the time prolonging.
结果表明：随着烧结温度的升高和保温时间的延长，气孔率和吸水率减小，体积密度和弯曲强度升高；晶粒长大填充气孔，使多孔材料孔隙率下降而强度增加。
Four kinds of amendments can improve soil physical properties. Soil bulk density decreased, soil porosity, permeability coefficient and field capacity increased under treatments.
四种改良剂均能不同程度的改善土壤物理性状，能降低土壤容重，提高土壤总孔隙度，加快渗透速度，增加田间持水量。
Porosity is defined as the ratio of the void space in a rock to the bulk volume of that rock multiplied by 100 to express in percent.
孔隙度定义为岩石内的孔隙体积占岩石总体积的百分率。
The results were as follows:Compared with conventional flooded paddy soils, rain fed and mulching plastic film slightly reduced bulk density, increased total porosity of the soils.
与常规水作相比，覆膜旱作稻田土壤容重有所下降，总孔隙度增加显著；
Dispersant system has important effect on stability of polymerization system, the diameter and diameter distribution, porosity and apparent bulk density of resin particles, etc.
分散剂体系对聚合过程体系的稳定性、所形成树脂的颗粒粒径及粒径分布、颗粒空隙率和表观密度等有重要作用。
The bulk density of PS was small and porosity was large, especially in winter wheat harvest time.
PS的容重较小，孔隙度较高，在冬小麦收获期表现尤为明显。
The mixed forest transformed net increase in forest litter layer of the soil surface allowed the small soil bulk density and larger soil porosity.
改造后的纯林内增加了土壤表面的枯枝落叶层，从而使得其内的土壤容重小，土壤孔隙度变大；
The physical character of soil was also improved after covering straw. The soil bulk density was reduced. Field moisture capacity and porosity percentage were increased.
覆草后土壤的物理性状也得到改善，土壤容重降低、田间持水量和孔隙度提高。
The studies of the soil properties suggested : (1) the bulk densities of the soils decreased and the general porosity of soil increased after amelioration;
两个试验田改良后土壤性质定量研究表明：（1）土壤容重降低，土壤总孔隙度增加；
The studies of the soil properties suggested : (1) the bulk densities of the soils decreased and the general porosity of soil increased after amelioration;
两个试验田改良后土壤性质定量研究表明：（1）土壤容重降低，土壤总孔隙度增加；
应用推荐