According to the ventilation resistance distribution and production plan, the optimum ventilation plan was selected after comparison.
根据千秋矿通风阻力分布和生产布置，对通风方案进行比较，优化选择。
According to the ventilation resistance distribution and production plan, the optimum ventilation plan was selected after comparison.
根据千秋矿通风阻力分布和生产布置，对通风方案进行比较，优化选择。
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