Text this: Investigation on the electrical discharge characteristics of a unipolar corona-wire aerosol charger

導出完成 — 

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