查询词典 xylem

Results There were differences in shape and layers of velamen cell, number of xylem bundles, maximum diameter of vessels, organization of pith, as well as the types, quantity, and size of crystals. D. fimbriatum could be distingushed from its adulterant species D.

结果根被细胞的形状及皮层厚度，中柱的木质部束数、导管的直径、髓的构成，晶体的类型与大小存在种间差异。

The canals originated in the alburnum during the very year in the form of cavities by the malformation, disfunction and solubilization of the youngest cells of secondary xylem.

我国枫香资源相当丰富，大量分布于华东、中南及西南各省，目前国内正在进行对此资源作深入开发应用的研究工作［1］。

What is the "annual ring" It is made of the xylem, the congregation of the pipes that carry water in a tree.

何谓『年轮』？输送水分的导管集合起来成为木质部，年轮就是由木质部构成的。

Intrafascicular CAMBIUM between xylem and phloem . annual ring Secondary phloem See secondary growth .

这种细胞存在于根和芽的顶端分生组织以及在原来分裂组织基础上形成的侧生分生组织，如位于木质部和韧皮部之间的束中形成层。

The sowing depth of spring sowing (through the stratification of damp sand) was optimum at 5~6cm, and the seedling emergence rate was up to 98.5%. Chop, chip, abdomen grafting and bud grafting with xylem went well in early and middle March and the suitable slacking time was from late July to early August.

春播播种深度以5~6cm为佳，出苗率达98.5%；劈接、切接、腹接、带木质部芽接宜在3月上中旬进行，适宜的解绑时间是7月下旬~8月上旬。

The activity of the vascular CAMBIUM gives rise to the secondary xylem and secondary phloem.

维管形成层的活动使次生木质部和次生韧皮部增厚。

After vascular cambium cells divide, the progeny cells on the interior side become xylem parental cell.

维管形成层细胞分裂后，在内侧分裂出来的细胞成为木质部的母细胞。

Result:Characteristics of the tangentical longitudinal section of stem with resin and surface view of leaves were elucidated.Besides xylem vessels and fibers of the stem,it was found that the red resin also exists in the cortex parenchyma cells of the stem and the medulla and xylem of the root.According to the HPLC fingerprint analysis result of the stems with and without resin,a number of flavones and stilbenoids were detected in the stem in which resin appeared after it wounded.

结果：阐明了含树脂茎的纵切结构以及叶的表面观特征；除了茎木质部导管和纤维中有树脂外，发现剑叶龙血树受到损伤之后在茎皮层薄壁细胞、根的髓部和木质部亦有树脂的分布；含树脂茎和无树脂茎的指纹图谱显示剑叶龙血树茎在形成树脂后的化学成分中出现了较多的黄酮类、茋类成分。

It is excreted from the dracaena plant's xylem after the xylem was injured by the outside force or intruded by the epiphyte, so it gains the recognition of the holy medicine on activating blood circulation.

血竭为一种传统名贵中药，它是龙血树属植物的木质部在受外力损伤或遭真菌侵入后分泌的红色树脂，被称为&龙血&，内服具有活血化淤、止痛等作用，外用具有生肌、止血、敛疮的功效，有&活血之圣药&的美誉。

The absorption of Cd in xylem sap in vegetative growth period was the maximum, and there was linear relation between the content of Cd in xylem sap and in the soil.

伤流液中镉在营养生长阶段吸收最大，且与土壤中的镉呈线性关系。

Objective: To study the effect of polycythemia on blood oxygen saturation.

裴蕾目的：观察RBC剧增而引起的高粘血症对血氧饱和度的影响。

Based on SIMPLER algorithm in the curvilinear body-fitted coordinates, the calculations were performed for Pr=0.7, Re=10~1000 on non-orthogonal non-staggered grids which are generated by elliptic equation systems.

采用曲线坐标系下压力与速度耦合的SIMPLER算法，数值研究了周期性渐扩渐缩波纹通道内脉动流动与换热情况，流动Re数的范围为10~1000，Pr数为0.7。