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81. | is quite difficult to do with any sort of accuracy, because the wind speeds and directions are very changeable |
| 要具有一定的精确度十分困难,因为风速和风向都太容易变化了,所以常常需要用到经验模型方法。 |
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82. | catastrophic creep |
| 频变蠕变 |
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83. | creep under variable stress |
| 变应力蠕变 |
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84. | To become blunt. |
| 变钝,变迟钝 |
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85. | To become dry;dry out. |
| 变干;变干燥 |
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86. | creep [concrete] |
| 蠕变;徐变〔混凝土〕 |
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87. | To become old. |
| 变老;变旧 |
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88. | To become perfect or refined. |
| 变完美,变精良 |
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89. | FSK [Frequency-Shift Keying] |
| 频率变换调变 |
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90. | To become thin or less compact or dense. |
| 变稀薄,变得不浓 |
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