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81. | geodetic circle |
| 大地圆|短程圆 |
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82. | nodal circle |
| 【物】波节圆 |
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83. | escribed circle |
| 旁切圆 |
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84. | graduated circle |
| 刻度盘|分度圈 |
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85. | isometric circle |
| 等角圆 |
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86. | friction circle |
| 摩擦圆 |
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87. | declination circle |
| 赤纬盘 |
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88. | circle cartogram |
| 加圆地图 |
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89. | bisected circle |
| 圆圈内加一横 |
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90. | orthotomic circle |
| 三圆的直交圆 |
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