perforation plate meaning in English
穿孔板 两个导管节互相连接处，在其上下壁上会全部或部分之膜壁会消失而形成一开口，以利水分之运输，此处之开口称之
穿孔底壁
麻黄型穿孔板
匀浆板，多孔板
Examples
- Anatomy of the vessel elements and perforation plates in the secondary xylem of casuarina cunninghamiana
细枝木麻黄导管分子及穿孔板解剖学研究 - Vessels solitary with angular outline ; perforation plates scalariform ; intervessel pits and vessel - ray pitting alternate to scalariform ; helical thickenings only in vessel elements tails
导管横切面为多角形，单管孔，散生。螺纹加厚仅出现导管分子尾端。梯状穿孔为主。 - Wood semi - ring - porous ; vessels solitary with angular outline ; perforation plates reticulate and scalariform ; intervessel pits and vessel - ray pitting alternate ; helical thickenings throughout body of vessel elements
单管孔，散生；整个导管分子上具螺纹加厚。网状和梯状穿孔。 - Wood semi - ring - porous ; vessels solitary with angular outline ; perforation plates scalariform ; intervessel pits and vessel - ray pitting opposite or opposite to scalarifonn ; helical thickenings in vessel elements present
梯状穿孔板；管间纹孔式为互列；射线导管间纹孔式多对列，类似导管面间纹孔式。 - The result shows that there are various patterns of vessel elements and three types of perforation plates : both ends of the vessel element are simple perforation plate ; one end with simple perforation , the other with two simple perforations ; one end with two simple perforations , the other with three simple perforations
在荔枝的次生木质部中导管分子存在着多种的样式，并且导管分子穿孔板存在着3种类型：两端均为一个单穿孔板；一端一个单穿孔板另一端两个单穿孔板；一端两个单穿孔板另一端三个单穿孔板。