In this manner, the brake booster {HEAD ~ 1 functions} as {TAIL ~ an automatic brake} without operating a brake pedal 
as
In this manner , the brake booster { HEAD ~ 1 functions } as { TAIL ~ an automatic brake } without operating a brake pedal
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH