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51. | rolling lubrication |
| 压延润滑 |
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52. | rolling terrain |
| 起伏地区 |
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53. | rolling admissions [ |
| 美]滥招生 |
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54. | rolling reduction |
| 压下量 |
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55. | rolling circumference |
| 滚动周长 |
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56. | rolling hatchcover |
| 滚动式舱盖 |
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57. | rolling country |
| 丘陵地区 |
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58. | rolling platform |
| 轧钢机台 |
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59. | rolling extension |
| 滚动延期 |
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60. | rolling scaffold |
| 带滚轴脚手架 |
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