closure oval foramen  卵圆孔封闭

patent oval foramen  卵圆孔未闭

Primary oval foramen  初级卵圆孔

secondary oval foramen  次级卵圆孔

oval edge oval pass system  椭圆—立椭圆孔型系统

Aurora oval  极光带

auroral oval  极光椭圆区; 极光同现区

auroral oval region  自动拨号

cane oval scale  蔗黄雪盾蚧

Cartesian oval  笛卡儿卵形线

Cassini oval  卡吾卵形线

Cassini oval region  Cassini卵形域

Cassini′s oval  卡西尼卵形线

close oval-shaped spiral tube  密绕椭圆截面螺线管

coiled oval  椭圆形蛇管; 椭圆形螺管

coiled oval tube  椭圆形蛇管; 椭圆形螺管

colour embroidered oval tablecloth  彩色绣花椭圆台布

Corrugated oval welded pipe  波浪形椭圆焊管

counter sunk oval head rivet  埋头凸顶铆钉