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| 51. | corner head rest seat |
| 靠枕底板座 |
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| 52. | mopped along the BaseBoards. |
| 沿着底板清洗 |
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| 53. | adjustable shoe sole |
| 可调刹车底板 |
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| 54. | level of base plate and support |
| 底板与支座标高 |
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| 55. | earth-baseplate resonance |
| 地面-底板共振 |
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| 56. | scraper ground plate |
| 扒斗底板 |
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| 57. | inverted-arch floor |
| 倒拱底板 |
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| 58. | stone gobber |
| 【采矿】底板清理工 |
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| 59. | enlarging board |
| 放大机底板 |
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| 60. | double bottom tank top plating |
| 双层底内底板 |
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