是指单位体积的某种物质（一般用于岩土体）的重量，符号为：γ，单位为：kN/m³。
土木工程常用术语英语翻译及名词解释(十二)--专业... ... 质量密度massdensity 重力密度forcedensity 动量矩momentofmomentum ...
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而水下河道冲刷、重力密度浊流也有助于铀在潮底同生富集。
The scouring by subfluvial rivers can also contribute to the syngenetic enrichment of uranium at the lake bottom.
在熔体内部，在重力的影响下，（研究人员）根据密度对不同元素进行了分类。
Within the molten interior, under the influence of gravity, different elements were sorted out by density.
最近一个周期中，M82的重力增强了M81周围密度波的脉动，导致M81的旋臂更浓密。
Last go-round, M82's gravity likely raised density waves rippling around M81, resulting in the richness of M81's spiral arms.
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