建议了区分小间距滞流区和强化区的准则数。
The criterion for distinguishing the two regions, i. e. stagnant air region and intensified region is suggested.
这些措施显著降低了壳程阻力和滞流区，壳程的气体接管方位可任意选定。
These measures significantly reduce the resistance and laminar flow zone in the shell side. The gas pipe connection orientation on the shell side can be freely selected.
揭示了导叶内部回流、漩涡，以及出口流动滞止区、二次流等流动细节；
The details of the flow fields such as the backflow, vortex and secondary flow were revealed.
揭示了导叶内部回流、漩涡，以及出口流动滞止区、二次流等流动细节；
The details of the flow fields such as the backflow, vortex and secondary flow were revealed.
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