介电损耗角正切 tangent cylindrical projection切圆柱投影 tangent adjacent to switch rail紧接尖轨的直线 ..
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oblique tangent cylindrical conformal projection 等角斜轴切圆柱投影
normal tangent cylindrical equivalent projection 正轴等面积切圆柱投影
traverse tangent cylindrical conformal projection 等角横切圆柱投影
transverse tangent cylindrical conformal projection 等角横轴切圆柱投影
transverse tangent cylindrical equivalent projection 横轴等面积切圆柱投影
transversal tangent cylindrical equidistant projection 横轴等距离切圆柱投影
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