{HEAD ~ The principle} of {TAIL ~ the communicating pipes} operate here in the above described manner when the height h1 in the reservoir 40 and the height h2 in the reservoir 41 are higher than the height hv of the connection conduit 42 with respect to the bottom of the tank 36 at the height h=0 
of
{ HEAD ~ The principle } of { TAIL ~ the communicating pipes } operate here in the above described manner when the height h1 in the reservoir 40 and the height h2 in the reservoir 41 are higher than the height hv of the connection conduit 42 with respect to the bottom of the tank 36 at the height h=0
HEAD HEAD HEAD HEAD HEAD HEAD REL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH