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71. | opening of flap valve |
| 拍门张角 |
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72. | wing flap relief valve |
| 翼瓣安全阀 |
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73. | centre thick of flap |
| 垫带中部厚度 |
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74. | flap assembly for aircraft |
| 飞机襟翼组件 |
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75. | hinged flap hatch cover |
| 铰翻型舱口盖 |
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76. | flap type wave generator |
| 摇板式造波机 |
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77. | transplantation of mucosal flap |
| 粘膜瓣移植术 |
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78. | fixing of pocket flap |
| 上袋? |
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79. | minimum flap retraction speed |
| 最低襟翼收起速度 |
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80. | edentulous-area grafts flap |
| 无牙区带蒂移植瓣 |
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