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71. | inverse definite relay |
| 反比时限继电器 |
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72. | definite time delay |
| 定时滞后 |
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73. | definite time lag |
| 定时滞后|固定延时 |
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74. | semipositive definite form |
| 半正定型 |
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75. | definite-correction servomechanism |
| 间歇作用伺服机构 |
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76. | negative definite matrix |
| 负定矩阵 |
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77. | definite-purpose relay |
| 固定用途继电器 |
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78. | positive definite matrix |
| 正定矩阵 |
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79. | definite angle shot |
| 最佳角度拍摄 |
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80. | trigonometric definite integral |
| 三角定积分 |
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