ASB refers to trojans such as back doors. Network equipment contract of Win32.Popwin.asb or Alcatel Shanghai Bell (hereinafter referred to as asb). If you are asking about ABS, it means: ABS is the abbreviation of anti-lock braking system, that is, "brake anti-lock braking system". In the absence of ABS, if the tire is locked by emergency braking, the braking distance will become longer and it is easy to run off or tail flick. ABS controls the wheel locking by controlling the release of brake oil pressure, so that the vehicle is always in a critical locking gap rolling state.