怎样拓印发动机号和车架号农机手换发“九二”式拖拉机牌证时，必须拓印发动机号和车架号。现简要介绍几种拓印方法。一种方法是：先把薄的白纸蒙在发动机号和车架号上，然后用铅笔横向轻轻涂抹，可拓印出所需的号码模，剪下来用胶水贴到登记表上。也可用红印泥先涂满发动... How to reproduce the engine number and frame number Agricultural machine hand replacement “1992” tractor license, you must rub the engine number and frame number. Now briefly introduce several rubbing methods. One method is to put a thin white piece of paper on the engine number and frame number, and then use a pencil to smear it horizontally to print out the required numbering pattern. Cut it down and apply it to the registration form with glue. Red mud can also be used first painted ...