أرسل هذا في رسالة قصيرة: Experimental comparison of disk vibrations mounted on ball bearing and fluid bearing spindle

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