In the method, ice is pressed under the water along {HEAD ~ an inclined surface} formed by {TAIL ~ a bar screen} or a grating 
formed by
In the method , ice is pressed under the water along { HEAD ~ an inclined surface } formed by { TAIL ~ a bar screen } or a grating
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH