浓缩机直线刮泥板与对数螺旋线刮泥板刮泥效率的探讨
농축궤직선괄니판여대수라선선괄니판괄니효솔적탐토
Discussion on the Efficiency of Scraping Mud by Using the Straight Line Board and the Logarithmic Spiral Board on Thickener Mud Scraper
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