xylem rays
- xylem rays的基本解释
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[医] 木射线
- 更多网络例句与xylem rays相关的网络例句 [注：此内容来源于网络，仅供参考]
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According to the arra ngem ent of phloem and xylem, shape of xylem and the Arranging way of xylem rays, the midrib-bundles were divided into five forms :(1) amphicribral round bundle;(2 ) pinnate-ray amphicribral reniform bundle;(3) fan-ray amphicribral reniform b undle;(4) almost-amphicribral bundle;(5) collateral bundle.
根据中脉维管束结构特点：木质部与韧皮部的位置，木质部的形状，木射线排列的方式，可分为5个类型：（1）圆形周韧维管束；（2）羽线肾形周韧维管束；（3）扇线肾形周韧维管束；（4）近周韧维管束；（5）下韧维管束。
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Parviflora in shrub communities had the xeromorphic traits in the aspects of ① their secondary xylem had shorter vessel elements, higher vessel frequency, less single porous percentage, lower rays, higher relative conductivity and lower vulnerability index, and ② their leaf had lower water potential, lower water content and free water content, higher bound water content, high ratio of bound to free water content, and less specific leaf area.
扁担木叶片、次生木质部的解剖和水分生理特征均表现出一定的可塑性，其可塑性指数高低顺序为次生木质部解剖特征（0、24）〉水分生理特征（0.19）〉叶片解剖特征（0.18）、与侧柏林和混交林相比，灌丛中扁担木个体对干旱生境有一定的适应能力，表现在次生木质部导管分子短，导管频率高，单孔率低，木纤维短，射线矮小，具有较大的相对输导率和较小的脆性指数；叶片水势、组织含水量、自由水含量较低，叶面积、比叶面积较小，而束缚水含量、束缚水自由水比值较高。