service riser meaning in Chinese
工作立管
上给供气分喉
Examples
- Tv announcement - regular maintenance of gas service risers
电视宣传短片-定期检修大厦供气喉 - Regular maintenance of gas service risers
定期检修大厦供气喉 - Therefore , property owners must arrange registered gas contractors to inspect gas service risers and installation pipes in their buildings every 18 months
所以，大厦业主有责任找注册气体工程承办商，每十八个月检修大厦的供气分喉和用户喉一次。