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61. | fluidity improver |
| 流动性改进剂 |
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62. | improvement of satellite orbit |
| 卫星轨道改进 |
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63. | MDTL (Modified Diode-Transistor Logic) |
| 改进二极管晶体管逻辑电路 |
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64. | oiliness improver |
| 油性改进剂 |
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65. | improved data interchange |
| 改进的数据交换 |
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66. | flour improvers |
| 粉面改进剂 |
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67. | improved polygon method |
| 改进多边形法 |
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68. | octane enhancing additive |
| 辛烷值改进剂 |
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69. | improvement costs |
| 固定资产改进费用 |
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70. | unit improvement factor |
| 装置改进因数 |
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