filtration characteristics造句

Microfilltration within stationmary tubular membrane elements with rotating flow is one of the most efficient method to enhance crossflow microfiltration , but its flow field characteristics are far from understanding and its filtration characteristics are also had to reseach , because the rotating flow field are superposed by rotating shear flow and axial flow and radial permeate flow
旋转流静止管式膜微滤是十字流强化微滤的有效方法之一，但由于其受到旋转剪切流、轴向剪切流及径向渗透流的三维流场作用，其流场特性有待探索，其分离特性也有待深化认识。
It's difficult to find filtration characteristics in a sentence. 用filtration characteristics造句挺难的