Chuẩn bị mẫu, ủ mẫu ở 20°C trong nă

Chuẩn bị mẫu, ủ mẫu ở 20°C trong năm ngày. Xác định nồng độ oxy hòa tan trước và sau khi ủ để tính khối lượng oxy tiêu tốn.

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Sample preparation, sample incubated at 20° C for five days. Determine the concentration of dissolved oxygen before and after annealing to a mass of oxygen-consuming.

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Sample preparation, samples incubated at 20 ° C for five days. Determining the concentration of dissolved oxygen before and after incubation for calculating the volume of oxygen consumed.

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楚ẩN BịMẫU，ủMẫUở20°C强Năm ngàY XáCđịNH Nồngđộ氧Hò谭TRướC Và秀川崎ủđểTíNH KHố我ượng氧钛êU TốN.

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