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51. | character form of a map |
| 地图特性 |
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52. | thomorphic chart |
| 墨卡托投影地图 |
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53. | similar map for navigation by air |
| 航空地图. |
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54. | cartographic scanner |
| 地图扫描仪 |
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55. | multidimensional map |
| 多维地图 |
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56. | palinspastic map |
| 复原地图 |
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57. | water pollution map |
| 水污染地图 |
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58. | photographic reduction of map |
| 缩影地图 |
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59. | rectangular chart |
| 正交投影地图 |
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60. | three-dimension map |
| 三维地图 |
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