Its perforation plates include two types,scalarform perforation plate and simple perforation plate,and the perforation of the simple perforation plate is extended.
其导管分子穿孔板有两种类型,即梯状穿孔板和单穿孔板,且单穿孔板的穿孔外展。
Educing and observing the stem’s secondary xylem of Magnolia biloba revealed two type of perforation plate, simple perforation plate and scalarform perforation plate.
对凹叶厚朴粗壮枝和细弱枝的次生木质部进行离析研究,发现其导管穿孔板有两种类型,即单穿孔板和梯状穿孔板。
The type of vassle element is scalarform perforation plate.
对白桦根次生木质部进行木材解剖学研究 ,发现其为散孔材 ,管孔多数为复管孔 ,少数为单管孔 ,为同形射线 ,导管分子穿孔板类型为梯状穿孔板 ,离析材料中韧型纤维丰