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| 81. | collection efficiency |
| 收集效率 |
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| 82. | Open Collection |
| 打开收集 |
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| 83. | waste collection |
| 废物收集 |
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| 84. | collection procedure |
| 收集程序 |
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| 85. | litter collection |
| 收集垃圾 |
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| 86. | collection coefficient |
| 收集系数 |
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| 87. | collect some article |
| 收集文章 |
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| 88. | collection of sewage |
| 收集污水 |
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| 89. | collecting pump |
| 收集泵 |
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| 90. | collection trap |
| 收集阱 |
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