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| 31. | low-level instrumentation |
| 低电平测量仪器 |
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| 32. | low-level ventilatio |
| 低位置通风口 |
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| 33. | low-level waste |
| 低放废物 |
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| 34. | low-level radiation |
| 低强度辐射 |
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| 35. | Low-level competition |
| 低水平竟争 |
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| 36. | low-level analysis |
| 低剂量放射性物质的分析 |
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| 37. | low level cistern |
| 低冲厕水箱（俗名低箱） |
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| 38. | low-level lighting |
| 低照度照明 |
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| 39. | low level sluiceway |
| 低水平面泄水道 |
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| 40. | low-level jet |
| 低空急流 |
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