covering back中文什么意思

进行掩护的后卫

• covering:    n. 被覆，外被；外封；房顶；上覆物 ...
• back:    n. 1.背，背部；背脊；背面，反面 ...
• carpet back covering:    地毯底布涂胶

例句与用法

1. Proceedings cover back cover front cover inside cover color inside crossing color b w
   会刊封面封底封二封三彩页跨彩页黑白页
2. Remove the bolts and cover , realign the diaphragm assembly , and place the cover back on the relief valve body
   拆卸螺栓和阀盖，重新校准隔膜总成，并将阀盖放回到安全阀阀体上。
3. 5 . follow the above instructions to move the lower cover back , and tighten up the two screws . be sure to tighten the screws firmly
   5 .依照前面的方法将下盖盖回， 2颗螺丝锁紧一定要记得将螺丝锁紧。
4. Follow the above instructions to move the lower cover back , and tighten up the two screws . ( be sure to tighten the screws firmly )
   依照前面的方法将下盖盖回， 2颗螺丝锁紧（一定要记得将螺丝锁紧） 。