A short tube with a constricted throat used to determine fluid pressures and velocities by measurement of differential pressures generated at the throat as a fluid traverses the tube.

• 文丘里管，一种带有收敛喉管的短管，用于确定液体的压力和流速，通过在液体流经该管时测量出喉管处产生的有差别的压力来实现。