§4-1吸气室 损失和效率 hvd /2 =0.1~0.4 2 n 2 C k k2 0 ( ) / 2 hyd ic ic h c =  损失和效率 §4-1 吸气室 0.1 0.4 ic  = 2 2 0 0 / 2 in in ic c c dp   − =  2 2 0 0 ( ) 2 in in hyd ic dp c c h  − = +  2 0 1 ( ) / 1 2 ic hyd ic ic c   = − = − h 1 1 ic ic ic k m k m  = − −