空间维是监测体系的实物表现，包含监测点及市场交易样点、地价区段、土地级别、城市、省、地区和全国七个层次。
The space dimensionality is actual substances of monitoring system, includes seven levels: monitoring point, land price section, land grade, city, province, region and nation.
该方法在比赛区域建立二维平面坐标系，将整个航程划分若干区段，通过坐标轴旋转和平移得到各区段的虚拟坐标系。
A two-dimensional model for sailing was used to divide the voyage into several sections and obtain a corresponding coordinate system by a circumvolving and shifting operation.
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