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

本文介绍采用甲亚胺-H酸分光光度法分析腐植酸类肥料中元素的方法。

This is a summery of the synthesis, structure and reaction of borazine.

对烷的合成、结构和反应综述。

It was asserted that the ore is mainly composed of minerals of kurnakovite, inderite and pinnoite.

确定该镁矿的主要矿物组成为库水镁石、水镁石及柱镁石。

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的分析结果是否为全问题一步探讨，结果证实，所拟溶样条件下的测定结果为全。

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

研究电弧炉碳热还原氧化钛和氧化制取二化钛的方法，制备出相对纯度大于95％的二化钛。

Two new exocyclic ring-fused boron-dipyrromethene (BDP) dyes with benzo crown ether subunit at meso-position were prepared.Their spectroscopic and electrochemical properties were investigated.

本文报道两种中位为苯并冠醚亚单元取代的含稠合外的-二吡咯亚甲基染料的合成、光谱和电化学性质。

Thus, the boron-bearing rock system and the magnesian rocks are the foundation of the borate deposits, whereas regional metamorphism and migmatitization and tectonism are the necessary conditions.

含岩系、镁质容矿岩石是矿形成的物质基础，区域变质及混合岩化作用、构造活动是矿形成的必要条件。