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81. | blade attachment |
| 叶片附件 |
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82. | unshrouded free standing blade |
| 自由叶片 |
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83. | vane efficiency |
| 叶片效率 |
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84. | blade thickness |
| 叶片厚度 |
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85. | solidity of blades |
| 叶片稠度 |
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86. | rotating paddle |
| 旋转叶片 |
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87. | stabilizer vane |
| 稳定叶片 |
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88. | blade curvature |
| 叶片弯度 |
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89. | spacing of fins |
| 叶片间距 |
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90. | blade vibration |
| 叶片振动 |
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