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   _____     ___               _    _     _  _   
  / ___//   / _ \\    ____    | || | ||  | \| || 
  \___ \\  | / \ ||  |    \\  | || | ||  |  ' || 
  /    //  | \_/ ||  | [] ||  | \\_/ ||  | .  || 
 /____//    \___//   |  __//   \____//   |_|\_|| 
`-----`     `---`    |_|`-`     `---`    `-` -`  
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發送短信 : Faxen's laws of a composite sphere under creeping flow conditions