相对密度是指物质的密度与参考物质的密度在各自规定的条件下之比。符号为d,无量纲量。一般参考物质为空气或水:当以空气作为参考物质时,在标准状态(0℃和101.325kPa)下干燥空气的密度为1.293kg/m3(或1.293g/L)。
... critical density 临界密度,临界交通密... relative density 相对密度 population density 人口密度 ...
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The sample prepared at 300℃under the pressure of 6GPa is 40-50nm in size and relative density 99%.
300℃、6GPa 制得了晶粒尺寸 40-50nm,相对密度大于 99%的 ZnO 纳米块体。
参考来源 - 纳米氧化锌常压/超高压下的烧结及其结构与性能Of all the binders used,the tape fabricated with 20wt%PVA+80wt%B-1070 has high green density. After sintering at 1600℃for 2h,the relative density of 96Al2O3 substrates was above 97%(3.73g/cm3).
以复合粘结剂20wt%PVA+80wt%B-1070为粘结剂的流延素坯在1600℃保温2小时烧结能获得相对密度达97%以上(3.73g/cm3)的96Al2O3基片。
参考来源 - 水系流延氧化铝陶瓷基片的研究·2,447,543篇论文数据,部分数据来源于NoteExpress
复合材料的硬度呈直线增加,相对密度也增大。
The Vickers hardness exhibits a linear increase and the relative density increases too.
由于密度是质量除以体积,相对密度和相对大小给予相对群众。
Since density is mass divided by volume, the relative densities and relative sizes give the relative masses.
对烧结样的相对密度、抗拉强度、延伸率等性能进行了测定与分析。
Relative density, tensile strength and elongation of samples were also measured and analyzed.
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