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61. | symmetrical diaphragm |
| 对称膜片 |
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62. | symmetrical clipper |
| 平衡削波器 |
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63. | symmetrical compound |
| 对称化合物 |
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64. | symmetrical flight |
| 对称飞行 |
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65. | symmetrical compressor |
| 对称型压缩机 |
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66. | symmetrical determinant |
| 对称行列式 |
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67. | symmetrical crown |
| 对称路拱 |
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68. | symmetrical equations |
| 对称方程组 |
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69. | symmetrical design |
| ﹝镜头﹞对称式设计 |
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70. | symmetrical flooding |
| 对称浸水|对称注水 |
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