| 1. | They can be used in devices for which vacuum tube valves were unsuitable, such as in hearing aids designed to fit into the ear .
它们能用在不宜采用真空管的装置上，例如能用在放在耳朵内的助听器里。 |
| 2. | Tube valves ; screw - on large bore convertible valve 105
内胎气门.大孔的旋接105型气门 |
| 3. | Tube valves ; rubber base type for air - waterfilling
内胎的气门.气压充水式橡皮底座气门 |
| 4. | Tubes valves ; rubber base valves 40 . 5 g single - bent
内胎气门.带橡胶座的40 . 5g单弯气门 |
| 5. | Tube valves ; straight rubber base valve 40 g
内胎气门.带橡胶座的40g型气门 |
| 6. | Tubes valves ; screw - on large bore valve 52
内胎气门.大孔的旋接52型气门 |
| 7. | Tube valves ; straight rubber base valve 34 g
内胎气门. 34g橡胶座直气门 |
| 8. | Tube valves ; metal base valve 33 . 5 m
内胎气门.带金属座的33 . 5m直气门 |
| 9. | Tube valves ; swivel type tyre valve , single bend form
内胎气门.有旋转阀体的单弯结构轮胎气门 |
| 10. | Tube valves ; metal base valve 90 bent
内胎气门.带金属座的90度弯气门 |
