短語詞組短語discharge through orifice 孔口出流量discharge coefficient for orifice 節(jié)流孔流量系數(shù)bottom discharge orifice 泄水底孔mid -discharge orifice 泄水中孔flow discharge through dam orifice 壩身孔口泄流orifice discharge 孔口出流large orifice discharge 大孔出流orifice discharge pattern 量孔的排放方式gate orifice discharge 閘孔出流 返回 discharge orifice