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.
利用坐标轴的旋转和平移，导出了组合机床主轴箱多种传动形式下传动轴坐标计算的统一公式。
The unified formula results from the revolution and translational movement of the coordinate axis. Apart from the unified calculating formula, the idea for calculation is clear and distinct.
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