opev.开放;自由进出(动词open的古体)=open.
operon mutation点突变
oper capita GDP人均GDP
opemfional risk操作风险
opercular valve盖板(动)
operculum oculi眼睑
opercula insulae岛盖
Opephora gemmatan.芽形槌棒藻
oped ZnO powders掺杂ZnO粉体
opercular muscle口盖肌(动)
operculate snails有厣螺类