| 1. | Often, the pcv filter does not receive regular maintenance . 一般来说,PCV滤清器不需要定期维修。 |
| 2. | Mobile library 10 service suspended from december 4 to 8 康文署流动图书馆十定期维修暂停服务 |
| 3. | Our gas appliances are serviced regularly 我们的煤气灶定期维修。 |
| 4. | We have the fax machine serviced regularly 我们定期维修传真机。 |
| 5. | Has this mower been regularly serviced 这个割草机定期维修了吗? |
| 6. | Often , the pcv filter does not receive regular maintenance 一般来说, pcv滤清器不需要定期维修。 |
| 7. | Electrical term maintenance contract 电力工程定期维修合约 |
| 8. | Regular maintenance of machine reduces much needless wear and tear 定期维修机器可以大大减少不必要的磨损。 |
| 9. | Keep air - conditioners well maintained and wash air filters frequently 冷气机要定期维修保养,隔尘网要经常清洗。 |
| 10. | Ventilation system should function properly and be regularly maintained 通风系统须保持操作良好,并定期维修保养。 |