单词	hollow core valve
释义	hollow core valve 空心阀
随便看	water-supported belt conveyor water-supporting deck water-surface water surface water surface area water-surface area water surface boil and flow vortex water surface burst water-surface cleaning device water surface curve watersurface detector water surface disguise water surface drop by dune water surface elevation water surface equilibrium vapor pressure water surface evaporation water surface-film water surface float water surface fluctuation water surface gradient water-surface gradient water-surface profile water-surfaces water surface slope water surface temperature jerc jerf jess jeyy jeyz jfbh jfbs jfby jfcg jfcljeyh 慢板慢步慢波睡眠慢火慢热慢牛慢班慢球慢用慢盘牙