Johnson sign

The Comparison between the Fluid Resistance Drop Calculation Value of Johnson Screen and Wire-cloth;

约翰逊网与编织网的流体阻力降计算值之比较

In this paper, through the comparison of the types of several screens used in fixed bed reactor, the features of Johnson screen were described.

通过对固定床反应器中所用的几种筛网形式进行比较,说明了约翰逊网的特点,简要介绍了约翰逊网国产化的过程、遇到的问题和所作的改进,以及在固定床反应器中的应用情况。

The Feeding Quality Analysis of the Hybrids between Tetraploid Sorghum and Johnsongrass;

四倍体高粱与约翰逊草杂交种饲用品质分析

Studies on Cytogenetics between Autotetraploid Sorghum and Johnsongrass;

同源四倍体高粱与约翰逊草杂交的细胞遗传学研究

Relationship of Cytogenetic Character of Interspecific Hybrids Between Autotetraploid Sorghum and Johnsongrass;

同源四倍体高粱与约翰逊草种间杂种细胞学特性的相关研究

Studies on the hybrid between autotetraploid sorghum and Johnson grass and the Subsequent Generation;

同源四倍体高粱与约翰逊草杂交及其后代表现

The relationship between "Sishentian" and Johnson grass was detected by SSR.

以同源四倍体高粱“四沈甜”和野生四倍体群体约翰逊草以及它们的杂交后代F_2、F_3群体为材料,通过SSR标记技术检测了“四沈甜”和约翰逊草之间的遗传差异,并对它们杂交后代F_2、F_3群体基因型分离情况进行了检测,结合F_1、F_2、F_3群体的田间主要农艺性状,分析了“四沈甜”和约翰逊草杂种优势多代利用的可行性。