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论述了铸造合金的液态结构、表面张力、流动产生的扰动以及真空度对铸造合金深过滤的影响，从流体力学的角度提出了过滤器设计的基本要求．
The effects of liquid structure, surface tension, flow perturbation and vacuum degree on the deep filtration of cast alloy were discussed. The basic requirements of filter design were proposed from the perspective of fluid mechanics.