求翻译：(7) 水泥粉磨及输送 水泥粉磨系统设有二台Φ3.8´13m水泥磨组成的圈流粉磨系统。出磨水泥经斗式提升机和空气输送斜槽送入O-SEPA选粉机。粗粉经空气输送斜槽返回磨头重新粉磨。细粉由高效袋收尘器收下后作为成品经斜槽送入8-F12´34m个水泥库储存；净化后的废气由系统风机排入大气。是什么意思？

(7) cement grinding and conveying of cement grinding system has composed of two sets Φ3.8 '13m cement mill circuit grinding system. The grinding of cement by the bucket elevator and air delivery chute into the o-sepa powder machine. Meal through the air conveyor chute to return to the grinding head

(7) cement powder mill and feed cement powder mill system has a 2 to 13 M 3.8 Φ cement mill stream consisting of the ring is worn. The cement mill the bucket lift and air feed chute feed O - SEPA option toner. Coarse powder, air delivery chute back ground and re-powder Mill. Powder from a highly eff

The (7) cement flour rubs and the transportation cement flour rubs the system to be equipped with two φ3.8´13m cement to rub the composition the circle to flow the powder to rub the system.Leaves rubs the cement sends in O-SEPA after the bucket elevator and the air delivery skewed slot to choose the

(7) the cement grinding and conveying of cement grinding system with two sets of φ 3.8 ´ 13m stream composed of cement mill grinding system. A cement mill bucket elevator and air conveying chute into the O-SEPA classifier. Rough powder through the air conveying chute back grinding to grinding again.