欧几里得区：Euclidean domain
欧几里得体：Euclidean body
欧夹竹桃油：oleander oil
欧拉环形山：Euler
欧拉求解法：Eular approach
欧拉有向图：Eulerian digraph
欧拉展开式：Euler's expansion formula
欧姆继电器：ohm relay
欧姆—厘米：ohm-centimeter,ohm-cm
欧伤牛草根：mandrake
欧文氏菌族：Erwinieae
欧洲白蜡木：European ash
欧洲白蜡树：Fraxinus excelsior
欧洲百脉根：lotus tetragonlobus
欧洲薄荷油：European pennyroyal oil
欧洲狗鱼瘟：hechtpest
欧洲红瑞木：red dogwood (Cornus sanguinea)
欧洲槲寄生：vicum album
欧洲齐暾果：olive tree
欧洲情报网：European Information Network {EIN}
欧洲商品号：European article number {EAN}
欧洲穗子榆：European hop-hornbeam
欧洲五针松：Cembran pine,Swiss stone pine
欧洲信息网：European Information Network {EIN}
欧洲榆小蠹：smaller European elm bark beetle
欧洲月桂树：baytree
欧洲战斗机：Eurofighter
欧洲支票卡：Eurocheque
鸥翼单翼机：gull-wing monoplane
偶氮[复]：azo
偶氮苯甲酸：azobenzoic acid
偶氮胆红素：azobilirubin
偶氮二甲酸：azodicarbonic acid,azoformic acid
偶氮二酰胺：azo-dicarbonamide
偶氮芳基醚：azoaryl ether
偶氮黄 I：azo yellow I
偶氮亮氨酸：L-6-diazo-5-oxo-L-norleucine(DON)
偶氮皮肤药：acetylamidoazotoluene (=azodermine)
偶氮氰化物：azocyanide
偶氮亚氨基：azimido- (=azimino- )
偶发故障率：constant failure rate {CFR}
偶发性洄游：accidental migration
偶发性纱疵：accident faults
偶合化合物：coupling compound
偶极γ跃迁：dipole gamma-ray transition
偶极电测深：dipole electrode array
偶见的物种：accidential species
偶联二聚物：coupled dimer
偶然分布带：zone of occassional distribution
偶然故障期：random failure period