發送短信 : Chemical synthesis and characterization of bismuth vanadate powder

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