Entrainment mechanism of sediment with mixed grain sizes is different from that of uniform grain size.
混合粒径条件下沉积物的起动机理不同于均匀粒径条件下沉积物的起动机理。
Impermeable formations, such as shales and siltstones, tend to be finer grained or of a mixed grain size, with smaller, fewer, or less interconnected pores.
不渗透的地层如页岩与粉砂岩。因颗粒很细或粗细颗粒混杂。只有较小，较少连通不好的孔隙。
In this paper effect of air temperature, air flow rate, air duct size and distance between air ducts on the performance of mixed flow grain dryer were analyzed and discussed.
分析和讨论了空气温度、流速、风道中的风道尺寸对混流谷物干燥机的影响。
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