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71. | deflection chassis |
| 偏转底板|扫描装置底盘 |
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72. | glass for photographic plate |
| 照相底板用玻璃 |
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73. | FLOOR DUCT AND ADAPTER |
| 底板管和配合件 |
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74. | 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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75. | microcomputer board |
| 微计算机底板或插件 |
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76. | sawtooth floor channeling |
| 锯形底板开槽法 |
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77. | floorboard for road motor vehicles or tractors |
| 道路机动车辆或拖拉机底板 |
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78. | invert elevation |
| 底板高程;底拱高程 |
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79. | Position seat on floor pan. |
| 在底板上定位座椅。 |
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80. | 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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