韧皮部

The primary cambium is found in the stem and root between the phloem and xylem cells, and by division gives rise to the secondary phloem and xylem in woody dicotyledonous plants.

它纵贯于根，茎等器官的木质部和韧皮部之间，是具有分生能力的组织。通过形成层的分裂可以在木本的双子叶植物中形成次生木质部和次生韧皮部。

Discussion of The Relation Between Single Fiber Strength and Bundle Fiber Strength

为探讨红麻韧皮部束纤维抗拉强度的分布规律，将红麻大小植株不同高度、不同层次的韧皮部束纤维进行分离并测定抗拉强度。

Researchers thought that florigen is made in the leaves as the length of the day changes and it is transported to the meristems, or growing tips of the plant, through the phloem network, which actively transports water, sugars and other molecules from the center of the plant to the periphery.

科学家认为成花激素是随着日长改变而在树叶中形成，然后通过韧皮部输送到分裂组织或是生长点。韧皮部主要负责从植物中心将水、糖分以及其它分子输送到周边组织。

It consists of the PROTOPHLOEM and METAPHLOEM.

由原生韧皮部和后生韧皮部组成。

As the plants grew for a longer time the cells in the phellem of the taproots become smaller in size and closer in arrangement and calcium oxalate crystal declined in quantity in the phelloderm of the taproots all the taproots had three secretory canals but on average the calibers of the canals gradually become smaller the parenchyma cracks in outer phloem and the xylem part near the root center gradually increased in size ,and the area ratios of phloem to xylem continuously decreased the vessel and vessel-layer numbers in secondary xylem of the transplanted .

不同生长年份的移山参主根结构具有一定差异：随生长年份的增长，木栓层细胞体积变小，排列趋于紧密；栓内层草酸钙结晶越来越少；分泌道均为3轮，但平均口径逐渐减小；韧皮部外侧和木质部靠近根中央处的薄壁组织的裂隙逐渐增大；韧皮部与木质部的面积比则不断下降；12年，16年生移山参主根次生木质部中导管数量和层数明显多于8年生。

The inclusion of the red phloem was more than that of white color phloem.

红色的韧皮部，组织细胞内的内含物多；白色类型的韧皮部，内含物较少。

The different bark type and phloem color were formed by the tissue structure of phloem and cell inclusion.

云南松的树皮类型和韧皮部颜色的不同是由韧皮部的组织结构和细胞内含物的不同而形成的。

The comparative studies of the structure of secondary phloem in 7 species of 2 genera of Salicaceae is studied.

杨柳科7种植物次生韧皮部的比较研究刘东华，高信曾，陈耀堂［摘要］本文研究和比较了杨柳科2属7种植物次生韧皮部解剖结构。

Results showed that the reducing sugar content in phloem was much higher than that in xylem, and a significant difference was found in the phloem of different poplar strains.

结果表明：各杨树品系木质部的还原糖含量远远低于韧皮部的含量，且韧皮部的还原糖含量差异显著。

Primary phloem PHLOEM derived from the procambium in the young plant.

初生韧皮部：指幼嫩植物中来源于原形成层的韧皮部。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。