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| 51. | combination learning |
| 联合学习 |
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| 52. | combination duplex |
| 组合双工制 |
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| 53. | combination fixture |
| 整套卫生设备 |
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| 54. | combination machinery |
| 联合机械 |
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| 55. | combination frame |
| 混合框架 |
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| 56. | combination lantern |
| 长二十米以下机动船的)两色灯 |
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| 57. | combination gloves |
| 镶皮手套 |
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| 58. | combination loading |
| 联通装载 |
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| 59. | combination ladder |
| 组合梯<可作单梯 |
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| 60. | combination preparation |
| 复合制剂 |
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