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| blast velocity at tuyere of BF (【技】 在高炉冶炼期间，鼓风通过风口断面时的速度。风口风速可以由单位时间内通过一个风口的风量除以风口截面积计算出。用标准状态下的风量计算出的风速为标准风速；用实际状态下的风量计算出的风速为实际风速。) | |||
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