{HEAD ~ A first part} of the air stream which is admitted into the portion 23 is swirled by {TAIL ~ the member} 40 to form a swirling stream having a ring shaped cross sectional outline and contacting the outermost layer of the flow of liquid issuing from the end portion of the section 31 
{ HEAD ~ A first part } of the air stream which is admitted into the portion 23 is swirled by { TAIL ~ the member } 40 to form a swirling stream having a ring shaped cross sectional outline and contacting the outermost layer of the flow of liquid issuing from the end portion of the section 31
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL 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