外膜

【医】 adventitia; adventitial coat; ectoblast; ectosac; extima; extine
theca externa; tunica adventitia; tunica externa; tunica extima

1.extima  2.involucra  3.involucre  4.involucrum  5.adventitiouscoat  6.adventitia  7.extine  8.exine  9.tunicaexterna  10.exin  11.exosporium  12.tunicaadventitia  

外的英语翻译：

besides; in addition; not closely related; other; outer; outside; unofficial
【医】 ec-; ecto-; exo-; extra-; xeno-

膜的英语翻译：

film; membrane; theca; velamen; velum
【化】 membrane
【医】 coat; envelope; film; lemma; membranae membranae; membranae membrane
panniculus; theca; thecae; tunic; tunica; velamen; velamenta
velamentum