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