The imperial palace is meridian gate, the south to the north is creature, DongHuaMen on the east, the west gate xihua, is the fine structure of the Angle of the sample.
故宫南边是午门，北边是神武门，东边是东华门，西边是西华门，是结构精美的角样。
The course which will cut each meridian at the same angle is termed a rhumb line.
与每一子午线相交成同一角度的航向叫恒向线。
The course which will cut each meridian at the same angle is termed a rhumb line.
与每一子午线相交成同一角度的航向叫恒向线。
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