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71. | extensible discharge trough |
| 伸缩式卸料溜槽 |
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72. | sphere-trough pair |
| 球槽副 |
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73. | trough concrete mixer |
| 槽形混凝土搅拌机 |
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74. | reciprocating trough conveyer |
| 簸动运输机 |
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75. | trough of syncline |
| 向斜槽 |
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76. | hanging trough flotator |
| 挂槽浮选机 |
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77. | deep-fault trough |
| 深断裂谷 |
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78. | long-wave trough |
| 长波槽 |
|
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79. | continuous trough conveyer |
| 连续槽型运输机 |
|
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80. | agitated trough dryer |
| 槽式搅动干燥器 |
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