ordovician

柯林斯英漢雙解大詞典

Ordovician /ˌɔːdəʊˈvɪʃɪən/

1.ADJ of, denoting, or formed in the second period of the Palaeozoic era, between the Cambrian and Silurian periods, which lasted for 45000000 years during which marine invertebrates flourished (古生代第二期)奧陶紀的; 屬於(古生代第二期)奧陶紀的

2.N the Ordovician period or rock system 奧陶紀時期; 奧陶紀岩石系統 ^[1] 

Ordovician reefs 奧陶系生物礁

Ordovician reservoir 奧陶系儲層 ; 奧陶系油藏

ordovician chronostratigraphy 奧陶紀年代地層學研究

Ordovician crudes 奧陶紀石油

ordovician reef 奧陶系生物礁

ordovician trilobite 奧陶紀三葉蟲

Ordovician oils 奧陶系原油

ordovician water 奧灰水

palaeozoic ordovician 古生界奧陶系 ^[1]