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| 31. | mechanical sweeping service |
| 机动洁净服务 |
|
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| 32. | high-pressure water scrubber |
| 高压洁净器 |
|
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| 33. | village cleansing beat |
| 乡村洁净地段 |
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| 34. | Code for design of industrial clean rooms |
| 洁净厂房设计规范 |
|
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| 35. | amendments of the Clean Air Act |
| 洁净空气修正案 |
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| 36. | kosher meat. |
| 洁净的肉 |
|
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| 37. | clean air package |
| 罐装洁净空气 |
|
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| 38. | class 100 clean environment |
| 100级洁净环境 |
|
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| 39. | clean air policy |
| 空气洁净政策 |
|
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| 40. | manifold cleaning paste |
| 多用洁净剂 |
|
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