转炉出钢量为30t,浇160mm×200mm三流连铸机,V均=0.9m/min,铸坯比重p=7.4t/m<sup>3</sup>,则一炉钢的浇注时间为()min

A.30/(3&times;0.16&times;0.20&times;7.4&times;0.9) B.30/(3&times;160&times;200&times;7.4&times;0.9) C.30/(3&times;160&times;200&times;0.9)

时间:2023-07-01 11:52:57

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