أرسل هذا في رسالة قصيرة: COMPARISON OF INDOOR AIR QUALITY IN NAIL SALONS SERVED BY CENTRAL AIR-CONDITIONING SYSTEM AND SPLIT AIR-CONDITIONING SYSTEM

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