1) secondary wall formation
![点击朗读](/dictall/images/read.gif)
次生壁形成
2) secondary cambium
![点击朗读](/dictall/images/read.gif)
次生形成层
3) allochtonic formations
![点击朗读](/dictall/images/read.gif)
次生形成物
4) secondary wall
![点击朗读](/dictall/images/read.gif)
次生壁
1.
Objective To study secondary wall formation of helical tracheary elements in the stem of Cucurbita moschata.
目的观察南瓜(Cucurbita moschata)茎螺纹导管发育过程中次生壁的形成过程。
5) secondary cell wall
![点击朗读](/dictall/images/read.gif)
次生胞壁
6) secondary porosity forming
![点击朗读](/dictall/images/read.gif)
次生孔隙形成
1.
The weakness of compaction and cementation,existence of clay coating and microcrystalline quartz are favor to the preservation of primary porosity;in the processing of thermal evolution of organic content and the conversion of clays,secondary porosity forming occurs.
造成相对高孔隙带出现的原因是原生孔隙保存和次生孔隙发育,压实作用、胶结作用较弱和自生粘土矿物包壳、自生石英微晶存在,有利于原生孔隙的保存;有机质热演化、粘土矿物转化过程中,次生孔隙形成。
补充资料:细胞壁形成,两子细胞隔开
潘家迅绘
[图]
![图](/picture/bkimg/ch_8/8_506_36_0.jpg)
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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