The soil mesofauna tends to gather on soil surface, but the vertical migrating greatly varies in different seasons affected by climate condition, edatope, artificial factor and so on.
土壤动物具有表聚性,但是在不同季节,由于受气候条件、土壤环境、人为因素的影响,土壤动物的垂直分布有明显变化。
Through the research on condition, form, character and factor of surface movement induced by exploiting coal. The paper discusses the surface deformation of some coal mines in Shanxi province.
本文通过对采煤后地表移动和破坏的破坏条件、形式、特性,影响因素等方面的研究,对山西省部分矿区的地表变形进行了论证。
With smooth constraint condition of the welding pool surface and variable factor successive over relaxation(SOR) method, the height of welding p…
利用熔池表面光滑模型和变因子超松弛方法计算了熔池表面的高度。
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