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31. | integral mesh tube |
| 结合网管 |
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32. | combined humic acid |
| 结合腐植酸 |
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33. | diffusional bond |
| 扩散结合 |
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34. | shallow binding |
| 浅结合 |
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35. | common association |
| 公用结合 |
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36. | PC pipeline combining |
| 管道结合 |
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37. | fit together; go together |
| 组合;结合 |
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38. | be mixed with hydrogen and oxygen |
| 氢氧结合 |
|
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39. | member aggregate |
| 元结合 |
|
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40. | combined nitrogen |
| 结合氮 |
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