流体出口 meaning in Chinese

fluid egress point
fluid issuing

The distribution of the gas - flow speed is measured at a position 1cm away from the outlet ( the end with larger air - gap ) . it is illustrated that the gas - flow speed keeps increasing from the out surface of the inner sleeve to the inner surface of the outer sleeve , and then it decreases gradually
测量了楔形气隙流体出口(大间隙端口)外1厘米处空气流速大小的分布，发现空气流速自转子(内筒)壁面处开始逐步增大，至定子(外筒)壁面处达到最大值，随后开始减小。