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| 51. | a killing frost |
| 使植物枯死的霜 |
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| 52. | resistance to frost |
| 防冻性能 |
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| 53. | frost damage prevention |
| 防冻害 |
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| 54. | degrees of frost |
| 霜度 |
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| 55. | frost-criteria evaluation |
| 霜冻标准的评定 |
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| 56. | fruit frost meteorology |
| 果树防冻气象学 |
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| 57. | frost-like powder |
| [制]霜 |
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| 58. | window frost over |
| 窗玻璃上结满霜花 |
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| 59. | frost-point technique |
| 霜点方法 |
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| 60. | perpetual frost climate |
| 永冻气候 |
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