【电】 backward wave tube
path; road; doctrine; Tao; say; talk; way; method
【医】 canal; canales; canalis; meatus; passage; path; pathway; tract; tractus
viae
wave
【化】 wave
【医】 deflection; flumen; flumina; kymo-; wave
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