19 ) we have : √ n = 15 mm . , Vmi mt = 15 j 15.5 0:45 37.63 mm . , 15.5 2 Vm2 = 15 0.45 3 P1 PA √ ( 1515 ) - = V2 = 15 √ 15′5 83.5 mm . , Vn 0.45 15.52 ...
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