0人已收藏
0人已打赏
免费0人已点赞
分享
给排水资料库
返回版块22.44 万条内容 · 561 人订阅
阅读下一篇
常用电话英语 与大家交流常用电话英语1(1)要找的人不在a: Hello, This is carol. May I speak to Miss Chen?b: Yes, one moment please. I’ll get her for you.a: Thank you.b: I’m sorry, she’s not at her room right now.a: Oh, I’ll call her again.
回帖成功
经验值 +10
全部回复(5 )
只看楼主 我来说两句-
waterp
沙发
预应力水泥管 RCP----Reinforced Concrete Pipe
2004-12-25 12:33:25
赞同0
-
goldtide
板凳
球墨铸铁管ductile cast iron pipe
2004-12-23 21:34:23
赞同0
加载更多雨水 Storm Sewer
回复 举报
发泡管PVC-U pipe with a cellular core
预应力水泥管prestressed concrete pipe
双壁波纹管corrugated pipe with double sides
回复 举报