Results showed that the microsporic tetrads of the simple flower belong to the tetrahedral type and mature pollen is two-celled with bristles on the surface.
该文对单瓣和重瓣紫花木槿雌雄蕊的发育进行了系统的观察。
Contrasting to the Fourier filter,the single lobe filter has not side lobe,and its data window length is not restricted to multiples of one cycle.
对传统的傅立叶滤波器与一种新型的单瓣滤波器进行了比较研究。