... 单出蝎尾状聚伞花序 wickel 单穿孔 simple perforation 单穿孔导管 porous vessel ...
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导管分子很短，单穿孔，无穿孔的输水分子具单纹孔；
Tracheal element is very short, sheet is perforative, have odd grain opening without perforative element is defeated by water;
含笑属植物的导管分子大多具有梯状穿孔板，仅有一种可看到单穿孔板。
In contrast, most of the Michelia species possess scalariform perforation plates and only one with simple perforation.
结果茵陈蒿具有梯纹、网纹和孔纹3种类型的导管，穿孔板类型为单穿孔。
Results There were 3 types of vessel elements, scalariform vessel, reticulated vessel and pitted vessel, the perforation plates were simple perforation plate.
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