According to mine the total resistance and a reasonable choice of the total air volume of fan and motor to meet the security, economic, reliable requirements.
根据矿井总阻力和总风量选择合理的风机和电机，使其满足安全、经济、可靠的要求。
According to mine the total resistance and a reasonable choice of the total air volume of fan and motor to meet the security, economic, reliable requirements.
根据矿井总阻力和总风量选择合理的风机和电机，使其满足安全、经济、可靠的要求。
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