أرسل هذا في رسالة قصيرة: Preparation of low-pressure water softening hollow fiber membranes by polyelectrolyte deposition with two bilayers

  ____     _    _    _____       ___      _  __  
 |  _ \\  | || | || |  __ \\    / _ \\   | |/ // 
 | |_| || | || | || | |  \ ||  / //\ \\  | ' //  
 | .  //  | \\_/ || | |__/ || |  ___  || | . \\  
 |_|\_\\   \____//  |_____//  |_||  |_|| |_|\_\\ 
 `-` --`    `---`    -----`   `-`   `-`  `-` --`