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71. | a diamond in a gold setting |
| 镶在金质底板上的钻石 |
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72. | Position seat on floor pan. |
| 在底板上定位座椅。 |
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73. | sawtooth floor channeling |
| 锯形底板开槽法 |
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74. | turning-over board |
| 翻箱板,造型平板,底板 |
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75. | deflection chassis |
| 偏转底板|扫描装置底盘 |
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76. | The key of the coal mining above confined aquifers is to understand the water resistion ability of the coal seam floor. |
| 承压水上采煤的关键问题是煤层底板是否能有效地阻止底板高压水突出。 |
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77. | invert elevation |
| 底板高程;底拱高程 |
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78. | retractable floor |
| 可收缩的铲斗底板 |
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79. | Many actors have influence on water inrush from the floor, of them the geological conditions of the floor are the most important. |
| 底板突水与否取决于多方面影响,其中最重要的是煤层底板条件。 |
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80. | To remove from a support, setting, or mounting. |
| 从支撑物、底板、底座取下,卸下 |
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