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BOD and Ultimate BOD | BOD problem | how to calculate ultimate BOD | BOD of waste water | sewage BOD
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媽媽，就咱家這點積蓄你還想炒股？我可不想流落街頭！ #鬥智斗勇#搞笑日常#萌娃
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"Adolf Hitler war ein Linker" - Alice Weidel im Gespräch mit Nikolaus Blome | ntv
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Settling velocity of particle, stokes equation, water treatment, waste water, sedimentation #bod
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BOD | Biochemical Oxygen Demand | BOD Solved problem | waste water engineering | #bod #ssc #sscexam
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