(廣)卵圓形的

The limbus of the fossa ovalis represents the edge of the septum secundum fused with the septum primum. 出生后，肺循環(huán)開始，左心房壓力增大，致使兩個隔膜緊密相貼并逐漸愈合，卵圓孔封閉，左、右心房完全分隔。

Fossa Ovalis -- Oval depression in the wall of the heart remaining when the foramen ovale closes at birth (See patent foramen ovale). 卵窩：胚胎發(fā)育時原先的卵形孔關閉后在心房隔膜上留下的卵形小坑遺跡。

The density and biomass of phytoplankton vary distinctly in diurnal and vertical dynamics mainly because of flagellate, such as C. ovalis. 浮游植物數(shù)量和生物量存在著明顯的周日和垂直變化。

Either of two deciduous trees(Carya glabra or C. ovalis) of the eastern United States,having pinnately compound leaves,male flowers grouped in catkins,and nuts with somewhat bitter kernels. 光滑山核桃樹美國東部的兩種落葉樹的一種（山核桃屬光滑山核桃或山核桃屬甜山核桃），長有羽狀的復葉、以柔葦花序聚集的雄花和核略有苦味的果實。

Dolgoma ovalis sp. nov. 圓朵苔蛾