- wall sleeve
- 墙: wall
- 套管: drivepipe; annular tubes; br ...
- 穿墙套管: wall bushing; wall feed-through sleeve; wall pope chase; wall tube insulator
- 高压户内穿墙套管: high te ion indoor wall entrance bushing sleeve; high tension indoor wall entrance bushing sleeve
- 母线式穿墙套管: bus bar wall bushing
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