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71. | continuous tunnel furnace |
| 隧道炉 |
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72. | load-out tunnel |
| 装载隧道 |
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73. | Lion Rock Tunnel Road |
| 狮子山隧道 |
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74. | highway tunnel |
| 公路隧道 |
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75. | Heading, Pilot tunnel |
| 隧道导坑 |
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76. | lining of tunnel |
| 隧道内层 |
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77. | circular tunnel |
| 圆形隧道 |
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78. | canal tunnel |
| 运河隧道 |
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79. | curvilinear tunne |
| 曲线隧道 |
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80. | preheating tunnel |
| 预热隧道 |
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