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- The seed density dynamic changes of soil seed bank in different pasturage growth phase on the desert steppe of Yanchi, county Ningxia were studied. 摘要研究宁夏盐池县荒漠草原牧草不同生长时期土壤种子库种子密度动态变化。
- Nuclear moisture and density dynamic meter 核子动态湿度密度仪
- The density of population in this city is very high. 这个城市的人口密度非常高。
- The area had a population density of five people per square mile. 该地区人口密度为每平方英里五人。
- density dynamics 密度动态
- The dynamics of natural and human-made bodies in outer space. 航天动力学，天体动力学将天然及人工天体推入外层空间的动力学
- The density goes down exponentially with height. 分子密度随着高度的上升而指数衰减。
- The population density is evened out. 种群密度亦趋于均匀化。
- Density exceeded 100 nests per mile. 丝巢密度超过每英里100巢。
- Do you know the density of population in this area? 你知道这个地区的人口密度吗?
- It can also perform molecular dynamics simulations. 它能也执行分子的动力学模拟。
- This wave of excess density is sound. 这种过剩密度的波就是声波。
- He made a contribution of inestimable importance in the field of dynamics. 他在力学领域作出了一项无可估量的贡献。
- The density logger consists of a radiation source. 密度测井仪包括辐射源。
- Methods Investigating the rodent density by ELTON. 方法用ELTON夹夜法对鼠密度进行调查。
- The dynamics of ocean waves are complex. 海浪的运动是复杂的
- By the charge density we mean the per unit volume. 所谓的电荷密度是指单位体积的电荷。
- The entropy density is constant ahead of the shock. 冲击波前方的熵密度是恒定的。
- The driver had to stop because the density of the fog made it difficult to see. 由於浓雾使道路很难看清,司机不得不停车。
- Recursive methods in economic dynamics lucas r. E. 经济动态学中的叠代方法。
