phellem
英
美
网络 木栓层; 木栓; 栓木; 成木栓层; 木栓層
英英释义
noun
- (botany) outer tissue of bark
双语例句
- The periderm was composed of new phellem, older phellem and the cortex which was pressed by both new and older layers of phellem.
周皮由新木栓层、旧木栓层以及新旧木栓层之间被挤压的皮层等颓废组织组成。初步推测，杜仲树皮的变异是由遗传水平上的变化引起的。 - Firstly, difference on the phellem: the periderm of smooth type was distinctly thinner than the other three types'bark, its number of layer was few;
其差异首先表现在木栓层结构上：光皮型杜仲的周皮明显比其余3种类型树皮薄，木栓层层数少； - RESULTS: These studies have proven its effective components are volatile oils and flavonoids and its main microscopic features are that phellem cells in its stem and palisade tissues contain some yellow-brown ingredients, In addition Its stems and leaves are covered by fuzzy secretory and non-secretory extra-epidermis cells.
结果：证明其有效成分为挥发油、黄酮类化合物，主要显微特征为茎木栓细胞和叶栅栏组织均含黄棕色物质；茎和叶表皮外均被有众多非腺毛和少数腺毛； - And that gutta-percha content in the bark decreases after the age of 6 due to the gradual formation of phellem because there is no gutta-percha in it and as a result, the utilization value of the bark is reduced.
由于树皮木栓层不含杜仲胶，随着树龄增加，树皮木栓层逐步形成，树皮含胶率降低，利用率随之降低。 - Objective: To study the shape and micro-character of euonymus alatus with phellem wing as drug, it supplied the bases for identifying the euonymus alatus.
目的：对以木栓翅入药的鬼箭羽的形态和显微特征进行研究，为鬼箭羽的鉴别提供依据。 - We see phellem below microscope, it is by by tens of thousands be just as alveolate to do cellular composition, air was filled inside the cell, formed many a airtight gasbag.
我们在显微镜下看软木组织，它是由成千上万个如同蜂窝状的干细胞组成，细胞内布满了空气，形成了一个一个的密闭气囊。 - Result: The phellem, phloem and xylem of wild bupleurum scorzonerifolium are different from those in the pharmacopoeia.
结果：野生狭叶柴胡的木栓层，韧皮部，木质部的显微特征均于药典上的记载有所不同。 - And, On the time of rough types'new phellem forming, the older phellem would accumulate.
糙皮型杜仲在新的木栓层形成的同时，旧有的木栓层会产生积累。 - According to the analysis of survey result: 1. A thin phellem or only an epidermis of 2& 3 years old branches can be considered as one of the insect's condition for selecting branches;
根据观察结果分析，4种寄主树2&3年生枝条或具表皮，或木栓层很薄； - Furthermore, thick phellem can oppose injure from high temperature.
此外，茎中发达的木栓层是良好的隔热材料，可以抵挡高温对它的伤害。