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The advantages and disadvantages of traditional air flotation and shallow air flotation were compared. The effect of shallow air flotation on acrylic fiber wastewater treatment was studied through the wastewater treatment project of a chemical fiber corporation in Jilin province.... (More)
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We present an example of applying ‘need-driven’ product design principle to the development of a rapid test kit to detect SARS-COV-2 (COVID-19). The tests are intended for use in the field and, longer term, for home use. They detect whether... (More)
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Cost and Weight of the Machine – The initial cost of a lathe machine is high. It actually depends on the purpose and how big the production is but most lathe machines used in big companies cost up to $50,000.... (More)
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Water trucks – specialized vehicles equipped with large tanks in the rear for transporting water and controlled spray nozzles for distributing it – are a familiar sight in a variety of sectors such as civil construction, mining, farming and fire... (More)