The amount of matter in a certain state of phase can however be so small in a borderline case {HEAD ~ the the cooling system} of {TAIL ~ the device} operates in practice with matter in one phase only, e.g. liquid phase 
of
The amount of matter in a certain state of phase can however be so small in a borderline case { HEAD ~ the the cooling system } of { TAIL ~ the device } operates in practice with matter in one phase only , e.g. liquid phase
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 HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH