【化】 standard pipe
criteria; level; mark; measure; normal; par; rule; standard; criterion
【计】 etalon; normal; STD
【化】 standards
【医】 norm; normo-; rubric; standard
【经】 denominator; norm; standard
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