进口蜗壳  inlet volute; inlet scroll

蜗壳进口压力  casing inlet pressure; spiral case inlet pressure

进口蜗管  inlet scroll

发动机空气进口壳  engine air inlet housing

排气进口壳体  exhaust gas inlet housing

排气进口壳体总成  exhaust gas inlet housing assembly

进口口门  Entrance

保压蜗壳  spiral case of pressure preservations

变型线蜗壳  type improving

不完全蜗壳  semi spiral case; semi spiral casing; semi_spiral

充水保压蜗壳  pressure-maintaining spiral case by water filling

抽气蜗壳  bleeding volute

大小圆蜗壳  major and small circle casing

大型蜗壳  Large-sized Spiral Case; large spiral case

垫层蜗壳  Spiral Case with Cushion Layer; cushioned spiral case

多级蜗壳式离心泵  barrel-type feed pump

非圆断面蜗壳水力设计  hydraulic design of spiral case with non-circular

风机蜗壳  worm shell of fan

风扇蜗壳  fan volute