The membrane includes a bellows portion for increasing {TAIL ~ the distance} by which the membrane can be deflected in response to {HEAD ~ the given pressure increase} 
The membrane includes a bellows portion for increasing { TAIL ~ the distance } by which the membrane can be deflected in response to { HEAD ~ the given pressure increase }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD