boron

Azomethine H Spectrophotometric Method for Determining Boron in Humic Fertilizer is described.

本文介绍了采用甲亚胺-H酸分光光度法分析腐植酸类肥料中元素方法。

Zhuanmiao boron deposit is a szaibelyite deposit which is located in Liaoning-Jilin rift zone.

砖庙矿为产在吉裂谷带镁石矿床。

Boron carbide can be obtained by means of thermal decomposition of triethylborane, tripropylborane and tributylborane, respectively.

以合成三乙基、三丙基和三丁基为原料通过热裂解制备纯度较高超硬材料；

The boron deficiency plant appears inter-venial chlorosis, thickening, crisping leaves and increased leaf weight ratio (LWR).

缺使叶重比(LWR)提高和叶片脉间失绿、变厚、变脆。

The separation conditions of carboboride and boron nitride were established by detecting the dissolution curve of electrolytical residua.

通过测定电解残渣溶解曲线，确定了物与氮相定量分离条件；

The carbothermic method of preparation for titanium diboride with titanium oxide and boron oxide in an arc furnace is studied.

研究了电弧炉热还原氧钛和氧制取二钛方法，制备出相对纯度大于95％二钛。

By fuming with sulfuric-phosphoric acid mixture the residual hydrofluoride was then expelled，and boron was finally determined by curcumin spectrophotometry after distillation.

同时，对所拟溶样条件下所得分析结果是否为全问题进行了进一步探讨，结果证实，所拟溶样条件下测定结果为全。

An investigation is also made on determining DMDAAC qualitatively by bromophenol blue test and quantitatively by tetraphenyl boron sodium precipitation reac...

用溴酚蓝对DMDAAC进行定性分析，用四苯酸钠及折光率法进行定量分析方法进行了探讨。