seade, mis koosneb koonduvast sisselaskeavast, mis on ühendatud silindrilise sektsiooniga, nimetatuna tavaliselt „kurguks“
toruga samatelgselt ühendatud koonduv seade, millel on pidev kõver profiil, mis ühineb samatelgselt ja puutujasuunaliselt samatelgse silindrilise avaga
device which consists of a convergent inlet connected to a cylindrical section generally called the “throat”
device inserted in a system intended to use for measurement of the flow rate through system, which consists of contraction and throat, or contraction, throat, and diffuser
convergent device coaxial with the conduit, having a curved profile without discontinuities which merges coaxially an tangentially with a coaxial cylindrical throat