| 1. | Valve - regulated lead acid battery for telecommunications
通信用阀控式密封铅酸蓄电池 |
| 2. | Stationary valve regulated sealed maintenance - free lead - acid batteries
固定型阀控式密封 |
| 3. | Structs are implicitly sealed ; therefore , they cannot be inherited
结构是隐式密封的；因此它们不能被继承。 |
| 4. | Specification for order of the valve regulated sealed lead - acid batteries
阀控式密封铅酸蓄电池订货技术条件 |
| 5. | Mechanical seals shall be type 21 or approved equivalent
所采用的机械式密封应该是21类或经过认可的其它替代品。 |
| 6. | Mechanical seals are standard " type 21 " design for low replacement cost
标准“ 21型”机械式密封，有利于降低更换成本。 |
| 7. | Sealed plug - in relays
插入式密封继电器 |
| 8. | Anchor seal assembly
锁紧式密封总成 |
| 9. | Non - contact seal
非接触式密封 |
| 10. | The study in the thesis focuses on the wear of bush seals in industry
本文围绕刷式密封装置在工程应用中的磨损特性展开了一系列的研究。 |
