{HEAD ~ An infusing unit} is employed in {TAIL ~ a bubble forming apparatus} which includes a venturi tube type inlet pipe unit, a discharge pipe unit, and a branch pipe 
{ HEAD ~ An infusing unit } is employed in { TAIL ~ a bubble forming apparatus } which includes a venturi tube type inlet pipe unit , a discharge pipe unit , and a branch pipe
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL 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