后生韧皮部

There is no transition between root and epicotyl of dicotyledonous seedlings with epigeal germination, whereas only having a directly simple connection between the tissues with the same radially developmental direction.

真叶叶迹的木质部与下胚轴中靠近韧皮部的后生木质部或次生木质部连接。根与上胚轴之间不存在维管组织的过渡、转变，而只是在同样发育方向的组织中有一种直接的简单的连接

It consists of the PROTOPHLOEM and METAPHLOEM.

由原生韧皮部和后生韧皮部组成。

The PROTOPHLOEM and METAPHLOEM are primary tissues and derived from the procambium,while the secondary phloem is formed from the VASCULAR CAMBIUM.

原生韧皮部和后生韧皮部属于初生组织，来源于原形成层，而次生韧皮部由维管形成层产生。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。