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awakening_銅蟲 (初入文壇)
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[求助]
求教各位大神一個英文題目
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In an ideal settling tank, a particle is completely removed if its terminal settling velocity is greater or equal to the depth/detention time ratio. a. Calculate the diameter of the smallest particle with a specific gravity 1.6 that would be removed in a rectangulat basin that is 45m long, 6m wide, and 2m deep with a retention time of 30 min. b. To improve removal efficiency, a consultant has proposed to install plates 6m wide and 2m high inclined at 60o to the horizontal and placed 10 cm apart (perpendicular distance between the plates) along the whole length of the tank. Find the new area available for settling and hence, compute the diameter of the smallest particle that will be removed. Comment on the results. specific gravity是一個什么概念?算沉降速度時不需要水的密度嗎? 大概得解題思路是什么?十分感謝! |
鐵桿木蟲 (正式寫手)
銅蟲 (初入文壇)
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