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| 81. | quartz contactor |
| 石英外壳 |
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| 82. | A shell casing. |
| 贝壳外壳 |
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| 83. | drawn-shell case |
| 压制外壳 |
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| 84. | reactor housing |
| 反应堆外壳 |
|
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| 85. | metal ceramic package |
| 金属陶瓷外壳 |
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| 86. | microphone case |
| 传声器外壳 |
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| 87. | moisture proof case |
| 防潮外壳 |
|
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| 88. | pressure tight case |
| 气密外壳 |
|
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| 89. | mild steel shell |
| 低碳钢外壳 |
|
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| 90. | calabash gourd (lagenaria vulgaris var. calvata) |
| 葫芦外壳 |
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