1.Argillaceous rheological property and penetrability of clay have been decided by zeta-potential,which is conducted by the mobile surface of clay particle and electroneutrality media of solution.
1.They burdened this earth a thousand ages before man appeared, but their fossil remains, found in the argillaceous limestone called by the English the lias, have enabled their colossal structure to be perfectly built up again and anatomically ascertained.