In this paper we deal with some properties of cobordism classes of fiber bundles over the real projective space.
本文研究了底空
为实射影空时上协边类纤维丛表示的若干性质.
影有关的; 影的影而变化的射的
影几何学影面影变换，射影变换In this paper we deal with some properties of cobordism classes of fiber bundles over the real projective space.
本文研究了底空为实射影空时上协边类纤维丛表示的若干性质.
According to the theory of scalar diffraction, first, the equipollence of spatial distribution of the plane-wave interferential field and parallel projective sine grating is discussed.
摘要根据标量衍射理论，首先讨论了两平面波干涉场的空
平行影正弦光栅的等价性。
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