| 1. | The test tube is closed at one end with a hydraulic seal .
试管的一端为水封所封闭。 |
| 2. | Air and water are needful for living things
空气和水封生物是不可缺的东西。 |
| 3. | Specifications for cooling water pump seals of engines
内燃机.水封.技术条件 |
| 4. | Test method for cooling water pump seals of engines
内燃机.水封.试验方法 |
| 5. | Specification for design of water - seal protection in drainage systems
排水系统水封保护设计规程 |
| 6. | Light and water are necessary to plants
光和水封植物是必要的。 |
| 7. | Optimization calculation of adjustable seal in some high - head radial gate
某高水头弧门伸缩式水封选型计算 |
| 8. | A preliminary study on water sealing runnel drainage technology for gas drainage
水封式巷道瓦斯抽放技术探讨 |
| 9. | Application of water - stemming shaped charge in fragmentation of oversized boulders
水封聚能药包爆破大块的应用 |
| 10. | Self - usting seal unit
自调式水封 |
