a cap with inner tube and down-flow
wall thickness design on inner tube
venturi tube
文丘里管
文土里管
文托利管
文杜里管
文氏管
细腰管
文曲利管
喉管
文德利管
铜绿
venturi tube dust remover
inner vertical bristles inner vertical bristle
Heat Exchange Tube and Tube Sheet
welding between heat exchanging tube and tube sheet
10 mineable coal seams in Inner Mongolia
115 geological team inner Mongolia
2(superscript nd) phase inner river closure
316Lstainless steel inner liner