JMD Blower Tubing ventilation is one of the most cost-effective means of underground positive ventilation when air must be delivered at a distance from a fan.
当空气必须从风机运送到远处时，JMD吹风机管通风是地下通风最划算的手段之一。
JMD Blower Tubing ventilation is one of the most cost-effective means of underground positive ventilation when air must be delivered at a distance from a fan.
当空气必须从风机运送到远处时，JMD吹风机管通风是地下通风最划算的手段之一。
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