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| 41. | wet barrel hydrant |
| 湿柱式消火栓 |
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| 42. | hydrant stand pipe |
| 消火栓竖管 |
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| 43. | hydrant flow test |
| 消火栓水量测试 |
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| 44. | a surface hydrant |
| 地面消防栓 |
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| 45. | hydrant lid key |
| 消防栓盖匙 |
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| 46. | supply irrigation hydrant |
| 提供灌溉龙头 |
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| 47. | hydrant; standpipe; standpost |
| 消防龙头;竖立水管;消防栓 |
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| 48. | California-type hydrant |
| 加利福尼亚式消火栓 |
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| 49. | TH =triple hydrant |
| 三出口消火栓 |
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| 50. | above ground hydrant |
| 地上消防栓 |
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