sexine

常见例句

There is some space between sexine and nexine.
外層電子密度相對較小，內層電子密度相對較大；
The exine of pollen wall is of different electron density, the nexine dense and the sexine, comprising tectum, bacules, and foot layer, relatively thin.
花粉壁的外壁分爲外層和內層，外層包括覆蓋層、基粒棒和基足層等三層，內層衹包含一層。
the sexine and nexine are separated and form remarkable vestibulum.Uunder the optical sect ion view, nexine thickens in the apertural region.
光學顯微鏡下，4-5孔，孔的結搆特殊，內、外層到孔邊分離，形成顯著的孔室。