【机】 blank pipe
canal; duct; fistula; guarantee; meatus; pipe; tube; wind instrument
【化】 pipe; tube
【医】 canal; canales; canalis; channel; duct; ductus; salpingo-; salpinx
syringo-; tuba; tube; tubi; tubing; tubo-; tubus; vas; vaso-; vessel
inner; inside; within
【医】 end-; endo-; ento-; in-; intra-
filter; leach; strainer
【计】 filter