2 Mechanical volume control damper shall be available at each exhaust point to enable easy balancing.
2 Mechanical volume control damper shall be available at each exhaust point to enable easy balancing.
每个排气点上由机械控制阀门来保持气压平衡。
2 Mechanical volume control damper shall be available at each exhaust point to enable easy balancing.
每个排气点上由机械控制阀门来保持气压平衡。