| 1. | All buried lines are coated with a protective covering to save them from corrosion .
所有埋设的管道必须涂上保护层，以防生锈腐蚀。 |
| 2. | They have a protective cover of bracts and scales from time of initiation .
从开始孕育时，花芽便具有一层由苞片和鳞片构成的保护层。 |
| 3. | Protective coverings for electric cables - part 1 : general
电缆外护层第1部分:总则 |
| 4. | A protective covering for the face or head
罩，防护罩用于脸或头的保护性覆盖物 |
| 5. | Axe for fire fighters , with protective cover
消防队员用的带保护套的斧子 |
| 6. | Hatchet for firefighters with protective cover
带保护罩的消防队员用斧 |
| 7. | Rigid protective covers for live working on a . c . installations
交流设施上带电作业用刚性保护罩 |
| 8. | Rigid protective covers for live working on a . c . installations
交流电设备上带电作业用硬质保护罩 |
| 9. | Rigid protective covers for live working on a . c . installations
交流电设备上带电作业用硬质保护罩 |
| 10. | Preliminary standard for protective covers for gasoline fuel line tubing
汽油燃料管保护覆层的预备标准 |
