universal stratigraphic classification统一: unify; unite; integrate地层: stratum; layer; serati; geos ...划分: divide; partition; repartiti ...或: nǎi-.分类: classify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:统一地层划分（或分类），即可在微信中查询翻译
