{HEAD ~ The apparatus} includes a member having {TAIL ~ a channel} through which fluid flows and at least one opening of a predetermined diameter in communication with the channel 
{ HEAD ~ The apparatus } includes a member having { TAIL ~ a channel } through which fluid flows and at least one opening of a predetermined diameter in communication with the channel
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH