hypostratotype辅助: assist标准: standard; criterion; benchma ...地层: stratum; layer; serati; geos ...标准地层: marker bed标准地层学: orthostratigraphy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:辅助标准地层,即可在微信中查询翻译