| 1. | Floor drains class l 15 with cleaning eye - summary
带清洗孔的l15级地面排水管.一览表 |
| 2. | Floor drains class l 15 with cleaning eye - components
带清洗孔的l15级地面排水管.部件 |
| 3. | Floor drains with clean - out ; particulars
有清扫口的楼面排水.详细资料 |
| 4. | Floor drains with bell - type odour seal ; summary
带钟形防臭封闭装置的楼层排水管.第1部分:一览表 |
| 5. | Floor drains with clean - out ; summary
有清扫口的楼面排水.概要说明 |
| 6. | Approach on the bell - type floor drain
关于钟罩式地漏问题的探讨 |
| 7. | Floor drains with bell - type odour seal ; particulars
带钟形防臭封闭装置的楼层排水管.第2部分:项目 |
| 8. | Every week , pour half a litre of water into each floor drain
每星期把半公升清水倒进地台排水口， |
| 9. | Every week , pour half a litre of water into each floor drain
每星期把半公升清水倒进地台排水口， |
| 10. | Clean the floor drain outlets regularly
定期清洁地台排水口 |
