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what's the flow pattern in a vertical cylindrical tank mounted with concentric shafts in pits with several impellers gapped, rotated clockwisely or counterclockwisely, for some liquids with definite shear rates I only have one question, anyone regards this content of paragraph reasonable? -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 1.163.152.178 ※ 文章網址: https://www.ptt.cc/bbs/EngTalk/M.1458293495.A.C27.html