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51. | package assembly |
| 外壳组装 |
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52. | cylinder baffle |
| 汽缸外壳 |
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53. | concrete haunching |
| 混凝土外壳 |
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54. | Something that muffles. |
| 包裹用以包裹的东西 |
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55. | cable sheathing |
| 缆索外壳 |
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56. | casing for pendulum clock |
| 摆钟外壳 |
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57. | boiler enclosure |
| 锅炉外壳 |
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58. | monolithic case |
| 整体外壳 |
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59. | case, for alarm clocks |
| 闹钟外壳 |
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60. | A small package or bundle. |
| 包裹一个小包裹或包袱 |
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