additional air regulator的用法和样例：
- In rare cases additional air jets near the exit have been tried.
- This additional fuel matches the additional air flow through so that the proper air-fuel ratio is maintained.
- Due lack parts，for troubleshooting，interchanged bleed air regulator of R engine with L engine，running-up test normal.
- New carburetors manufactured for cars with these systems are specially calibrated to compensate for the additional air.