terrestrial meridian地面: the earth's surface; ground子午线: meridian反面子午线: antimeridian地面子午圈: terrestrial meridian高斯平面子午线收敛角: gau gridconvergence; gauss grid convergence下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:地面子午线，即可在微信中查询翻译
