A simple prediction model for regional ground water and soll water concentration, in which the immobile water is taken into account, is proposed based on water movement and solute transport.
Their natural beauty had been hijacked by an extraordinary concentration of ankle-deep plastic and paper garbage on the ground.
然而令人扫兴的是，大自然的鬼斧神工却在齐踝深的塑料垃圾和废纸中黯然失色。
3
Through continuous automatical adjustion of the paragraphs fluid volume, ground sand concentration, proppant type and size and so on, the software finally designs fracturing process.