{TAIL ~ The method} is also functional by filling {HEAD ~ the chamber A} to pressure p0x and having in the measuring chamber C a gas to be measured, e.g. px and py 
{ TAIL ~ The method } is also functional by filling { HEAD ~ the chamber A } to pressure p0x and having in the measuring chamber C a gas to be measured , e.g. px and py
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH