un. | 1. 放水管 |
1. | 空导管 ...mergency) EA 每一(Each) EC 空导管(Empty Conduit) EL 高程(Elevation) ELEC 电机(Electric) ELV 电梯(Elev… wenku.baidu.com|基于22个网页 |
2. | |
3. | 空线管 http://www.ptsgi.com/chinese... ... "空隙灌浆"," Cavity grouting" "空线管"," Empty conduit" "空调复机"," Null modem" ... www.guandang.com|基于 1 个网页 |