n.改良多圆锥投影 polyconic projection: 多圆锥投影conformal polyconic projection: 正形多圆锥投影map projection polyconic: 多图锥投影map projection rectangular polyconic: 多图锥钜形投影modification polyconic projection: 改良多圆锥投影下载手机词典可随时随地查词查翻译