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English

A de Laval nozzle (or convergent-divergent nozzle, CD nozzle or con-di nozzle) is a tube that is pinched in the middle, making a carefully balanced, asymmetric hourglass shape.

Chinese

戴拉華喷管(de Laval nozzle, 亦称渐缩渐阔喷管,convergent-divergent nozzle、CD nozzle或con-di nozzle)是一個中間收縮、不對稱沙漏狀的管子。