retrogressive movement 中文意思是什麼
retrogressive movement
解釋
後退運動- retrogressive : 倒退的, 退化的, 退步的
- movement : n 1 運動；活動；進退 行動 動靜；動搖；動作；舉動；〈pl 〉姿勢；態度。2 移動 遷移。3 （市面的）活...
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Based on the prototype observation and model test made for the periodic - flushing de - silting basin, the process and the division of the three - stage hydraulic flushing are put forward on the basis of the feature of water - sediment movement, and then the calculation formulas and the related parameters for the stages of emptying flushing ; retrogressive flushing and the flushing along the basin are given as well
摘要依據定期沖洗式沉沙池水力沖洗的原型觀測和模型試驗，根據水沙運動特徵，提出定期沖洗式沉沙池水力沖洗三階段沖洗過程及劃分，分別給出泄空沖洗、溯源沖洗和沿程沖洗各階段的計算式和有關參數。
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