该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......

We investigated the role of the "sieve tube-companion cell complex" lining the tube periphery, particularly the microfil......

The extruded protoplasm from the coenocytic green alga, Bryopsis hypnoides Lamouroux, was able to reform a cell wall and......

Explanations for protoplasmic streaming began with appeals to contraction in the eighteenth century and ended with appea......

为提高菌株产木聚糖酶的能力，以黑曲霉An54为出发菌株，采用UV和DES复合诱变处理原生质体，以nystain^r和2-D-G^r为遗传标记，定向筛选得......

各类生物学词典、辞海及有关教科书中,关于原生质和原生质体的定义较为模糊.笔者认为原生质和原生质体是对细胞生命活动的物质基础......

以大葱为材料，采用叶片环剥方法，分别用乙酰胆碱（Ach）、细胞松弛素B（CB）和甲酰氨草磷（AIM）对裸露维管束处理，以叶片中N、P和K为指标。研究了......