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