But, no tillage and residue mulching increased bulk density of 20-40 cm layer.
但是,免耕和秸秆覆盖增加了底层20-40cm的土壤容重。
参考来源 - 毛乌素沙地南缘保护性耕作试验研究The decomposition and mullitization of andalusite were studied by analyzing the linear change rate after firing,bulk density,apparent porosity and XRD.
通过对试样烧后线变化率、体积密度、显气孔率及XRD分析数据进行处理,分析了红柱石分解和莫来石化反应的行为特征。
参考来源 - 南非红柱石细粉的烧结行为和莫来石化研究Small particle of shale filled into the bigger gaps of fly-ash particles,which increases the bulk density.
页岩的小颗粒填充了粉煤灰颗粒间的空隙,增大了试样的堆积密度。
参考来源 - 粉煤灰烧结制品微孔调控技术Of all the treatment, when the content of PAM is 30‰, the bulk density is minimum.
所有处理中在PAM含量越高（30‰时）时容重明显最小。
参考来源 - 秸秆改良材料对沙质土壤理化性质的影响·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
It is nearly identical to our own planet and bulk properties such as mass, density, and size.
它几乎与我们自己的行星和体积属性相同，包括质量、密度和大小。
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 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。
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