通过数值模拟，对比分析了J型通风和u型通风条件下的采空区流场及瓦斯运移特征。
Through numerical simulation, the characteristics of goaf flow field and gas transportation under J-shape and U-shape ventilation systems were analyzed.
本文以气力压运系统各项压损计算模型为基础，提出了两相流总压损的计算模型，通过计算机对总压损计算模型进行了八次工况的计算。
Based on the calculation model of various pressure losses in a positive pneumatic conveying system, a calculation model of total pressure loss in two - phase flow is established in the paper.
应用煤岩体变形与煤层气(瓦斯)越流相互作用的新观点，研究了双层系统煤层气越流运移的机理。
Based on the new viewpoint of the interaction between solid deformation and gas leak flow, the mechanism of gas leakage in double deformable coal seam can be understood.
可溶性化学物质在土壤中的运移和分布一般可以反映出多孔介质中溶质随着水分运(流)动的规律。
The transport and distribution of dissolved chemicals are influenced by water movement in the soil system.
本文通过对堆石坝渗漏流场中示踪剂运移规律进行概化，建立示踪探测数学模型，达到了认识其流场特征的目的。
Mathematical model of tracing exploration is established after generalizing the law of movement of tracer in seepage flow field of rockfill dam to master the characteristics of flow field.
在过去五年里，夏晖集团更将业务扩展到一流的连锁咖啡店、现购自运式卖尝酒类及高级食品、及其它的快餐连锁系统。
In the last 5 years, HAVI Group has expanded the business covering topnotch coffee shop chain system, cash-and-carry hypermarket, wine and premium foods, and other quick-service restaurant system.
在过去五年里，夏晖集团更将业务扩展到一流的连锁咖啡店、现购自运式卖场、酒类及高级食品、及其它的快餐连锁系统。
In the last 5 years, HAVI Group has expanded the business covering topnotch coffee shop chain system, cash-and-carry hypermarket, wine and premium foods, and other quick-service restaurant system.
在过去五年里，夏晖集团更将业务扩展到一流的连锁咖啡店、现购自运式卖场、酒类及高级食品、及其它的快餐连锁系统。
In the last 5 years, HAVI Group has expanded the business covering topnotch coffee shop chain system, cash-and-carry hypermarket, wine and premium foods, and other quick-service restaurant system.
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