通过减少负责包囊作用的血细胞而使包囊作用受到抑制.Suppression of encapsulation is by reducing blood cells responsible for encapsulation.活囊蚴可以在包囊状态中生活几个月.Metacercariae may endure in the encysted state for several months.当环境不利时,变形虫产生包囊.An amoeba f...
The authors show that the hyperboloid of one sheet and the hyperbolic paraboloid are ruled surfaces.作者证实:单叶双曲面和双曲抛物面是直线曲面.Two fdmilies Of characteristic lines in the hyperbolic region are not orthogonal.在双曲型区域两族特征线互不正交.F...