The difference between the current liquid level and the upper limit of {TAIL ~ liquid level} is taken as {HEAD ~ the maximum amount} supplemented when only one component is supplemented 
The difference between the current liquid level and the upper limit of { TAIL ~ liquid level } is taken as { HEAD ~ the maximum amount } supplemented when only one component is supplemented
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH