This assures that {HEAD ~ the melting} of {TAIL ~ the components} of the batch will be rapid and energy saving, and that at the same time the glass melting furnace will operate under specific conditions despite varying composition of the batch and will supply molten glass which can be further processed with no problems 
This assures that { HEAD ~ the melting } of { TAIL ~ the components } of the batch will be rapid and energy saving , and that at the same time the glass melting furnace will operate under specific conditions despite varying composition of the batch and will supply molten glass which can be further processed with no problems
OTH OTH OTH 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 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