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91. | line at infinity |
| 无穷远直线 |
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92. | steel elbow |
| 直线球 |
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93. | linear accelerator |
| 直线加速器 |
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94. | line reflection |
| 直线反射 |
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95. | a rectilinear figure |
| 直线图形. |
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96. | line (linear) scale |
| 直线比例尺 |
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97. | doubly straight line |
| 双直线 |
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98. | line department |
| 直线部门 |
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99. | collinear lines |
| 共线直线 |
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100. | conjugate lines |
| 共轭直线 |
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