The atmosphere which is introduced into the variable pressure chamber is arranged to push back the piston, so that {HEAD ~ a control pressure} which depends on {TAIL ~ the magnitude} of a current passing through the solenoid can be generated within the variable pressure chamber 
depends on
The atmosphere which is introduced into the variable pressure chamber is arranged to push back the piston , so that { HEAD ~ a control pressure } which depends on { TAIL ~ the magnitude } of a current passing through the solenoid can be generated within the variable pressure chamber
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH