postero-anterior projection radiography后: behind; back; rear前: front位: place; location投影: projection; projective; shad ...x: vt. (x-ed, x'd x-ing, x'ing) ...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:后前位投影x片，即可在微信中查询翻译
