On extracting niobium tantalum from tungstenic slag

钨矿渣中铌、钽的提取

The cracking reaction of rosin catalyzed by phosphatic and tungstenic heteropoly acids is studied in discussing the factors affecting the reaction in detail .

本文通过研究反应温度、反应 时间及 催化剂用量对反应 进程的影响，对磷 钨杂多酸 （ HPA ）催化松香裂解反应及反应动力学进行了研究。

Damage Analysis of the Warhead of Tungstenic Metal Column Prefab Fragments to Homogenized Armor

钨 合金 （ 碳化 钨 ）柱形预制破片战斗部对均质钢甲的毁伤 效能分析

The Recycle and Treatment of Wastewater in Concentrating Mill of Tungstenic Minerals

钨选厂废水的回用和处理

Preparation of Scandium Oxide from Tungstenic Slag by the Process of Extraction

用萃取法从 钨矿渣制取氧化钪

A Study on Application of Tungstenic Slag in Production of Wear Resistant Grinding Balls

钨渣在耐磨球生产中的应用研究

Detachable ballon was used as embolization agent in 40 cases and tungstenic coil in 75 cases .

40例用可脱球囊栓塞，75例 用 钨丝螺旋圈栓塞。

Adipic acid was synthesized by tungstenic acid / phosophoric acid ligand catalyzing oxidation cyclohexanone with 30 percent hydrogen peroxide in the absence of organic solvent and phase-transfer catalyst .

在无有机溶剂、相转移催化剂的情况下，以30%的过氧化氢为氧源，钨酸/磷酸配体催化氧化环己酮合成 己二酸。

Films in before processing you should use iodin tungstenic ultrared warming up .

冷膜在处理前，应先用碘 钨红外线预热。

Direct catalytic oxidation of cyclohexene to adipic acid by tungstenic acid / inorganic acidic ligand

钨酸/无机酸性配体催化氧化环己烯合成 己二酸

Using tungstenic slag as alloying additive a sort of W Mn Nb Ta containing cast iron wear-resistant grinding ball was developed .

用 钨渣作为合金添加剂，研究出含W、Mn、Nb、Ta的合金铸铁磨球。