發送短信 : Size, separation, structural order, and mass density of molecules packing in water and ice

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