流动截面 meaning in Chinese

flow section

At the end , the study comes to the conclusion that the physical fundamentals of electromagnetic wave imaging logging are strong , and it is necessary to select the wave working mode and frequency carefully for measuring and displaying the multiphase flowing section in oil wells
研究结果不仅论证了电磁波成像测井具有坚实的物理基础，而且明确了正确测量和显示井内流体流动截面必须合理选择电磁波的工作模式和频率。
Using digital image processing technique to process the solid - gas - water three - phase flow image and separate dispersed phase from the three - phase flow image , author calculated the bubble number , particle number in instantaneous image , area of bubble image and other parameters , and analyzed the effect of image enhancement , image segmentation , image analysis and other problems existed in bubble image processing
应用数字图像处理方法对水气固三相流图像进行处理，将其中的分散相分别提取出来，计算得出瞬时图像范围内的气泡个数、粒子个数，气相所占流动截面比等参数；分析了图像增强、图像分割、图像分析等方法在多相流图像测量上的作用以及气泡图像处理中存在的问题。