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71. | vacuum housings |
| 真空外壳 |
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72. | waterproof case |
| 防水外壳 |
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73. | building envelope |
| 建筑物外壳 |
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74. | small outline package |
| 小型外壳 |
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75. | mechanical shell |
| 机械外壳 |
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76. | outer chamber shell |
| 燃烧室外壳 |
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77. | earth of casing |
| 外壳接地 |
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78. | spark plug body |
| 火花塞外壳 |
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79. | main body cover |
| 主体外壳 |
|
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80. | fuselage cover |
| 机身外壳 |
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