查询词典 hydroxide

The leaching mechanism of niobium from a refractory niobium-tantalum ore by concentrated potassium hydroxide was studied.

实验研究了难分解铌钽矿在高浓度氢氧化钾溶液中浸出过程的机理。

Corneal biopsy with 178.2mmol.L-1 potassium hydroxide slide is a rapid and simple method with high positive rate in diagnosis of fungal corneal ulcer.

角膜活检加178.2mmol.L-1氢氧化钾湿片法是一种快速、便捷、阳性率高的诊断真菌性角膜溃疡的方法。

The results showed that the most important factors related to the accuracy were the recrystallized potassium persulfate and the sodium hydroxide.

通过试验发现，过硫酸钾、氢氧化钠的纯度是影响测定准确性的最重要因素，其中分析纯AR级的过硫酸钾(K2S2O8)经纯化处理可以降低空白值；消解时间的延长和消解温度增加对提高实验准确性的影响不显著。

To make a 20% solution, slowly add 100 grams of Potassium or Sodium Hydroxide crystals to 500 cc's of distilled water and store in a sealed jar.

制作20%的溶液，缓慢添加100g氢氧化钾或者氢氧化钠晶体到500蒸馏水中，储存在密封的广口瓶中。

The reaction of the compound - 3 - triaiylstannyl -1,1 - diphenyl - 2 - propenyl - 1 -ol with ICl,Br2,I2 formed organotin halides ,which reacted with KOH to form organotin oxide or hydroxide.

首次以非碳环醇-3-三芳基锡基-1，1-二苯基-2-丙烯基-1-醇[Ph_2 CCH=CHSnAr_3]和卤素或拟卤素发生取代反应得到卤化物，并以此合成了氢氧化物、氧化物和配合物。

Michael addition reaction between poly and propyl vinyl sulfoxide was studied in sodium hydroxide aqueous solution.

本文研究聚乙烯醇与丙基乙烯基亚砜经Michael 加成反应合成含亚砜基的改性聚乙烯醇功能高分子。

The advantage of " green safety neutralizer " pulpiness magnesium hydroxide material used in the environmental field was narrated , and the shortcomings of the traditional production methods were analyzed simply .

简述了"绿色安全中和剂"料浆状氢氧化镁应用于环保领域的优势，浅析了传统生产方法的缺点，着重介绍了海水，卤水－轻烧白云石沉淀法生产氢氧化镁工艺的基本原理，工艺流程，产品质量，工艺特点。

The content of the irregular bigger drop phase approached to pyrope. It showed that the crystallization and phase separation mechanics of the glass was the nucleation-and-growth transformation and the crystallization is bulk crystallization. The activation energies of phase separation and crystallization were calculated by the modified Kissinger method, about 310.445 KJ/mol and 249.26 KJ/mol respectively. Using the aluminum hydroxide as the reference, we calibrated the phase separation exothermal enthalpy of the quenched and nucleation treated glass, ca

钠镁侣硅系统徽晶玻瑞快速徽晶化机理的研究利用上式求得混合系统中两相的单位体积相变自由能、两相间的表面能和相互作用参数，分别为刁。6753xlo3了zcm3·、3ss.gozzem3、5.316xlo一JzcmZ和一442 xlol，进而求得球形核的临界半径为nnm，以及一个临界核的成核自由能变化为2石89 x10一14/cm3；成核半径16.5纳米时，球形核稳定存在，实测 1752个球形核中最小核半径为20纳米，与计算结果基本吻合。

The study on the hardening mechanism of the soft soil with the materials shows that the hardening procedure can be divided into three stages:(1). Hydrating and dissolving stage, when material A and material B of the high-water-content and quick-setting materials respectively dissolve and balance in water.(2). Gel and consolidating stage, when the materials hydrate into calcium crystal and the ion exchange and aggregation of soil particles occur in an alkaline environment.(3). the structure developing stage, when the calcium crystals connect each other, absorb and crystallize the water around; the hydrate remnants, calcium hydroxide, carbonate continuously in water and in the air.

本文对高水速凝材料-软土硬化机理的研究表明，高水速凝材料-软土的硬化过程可分为三个阶段：①水化溶解阶段：主要为高水速凝材料的甲、乙料分别与水的溶解、维持平衡阶段；②胶凝固化阶段：主要为高水速凝材料的水化反应生成钙矾石晶体以及土颗粒在碱性环境中发生离子交换和团粒化作用；③强度增长阶段：钙矾石晶体相互连接，大量吸收周围环境中的水分，并将水分变成自己的结晶水；水化残余物氢氧化钙在水中和空气中发生碳酸化作用。

In the first one , Our experiment team use ethanol liquor as solvent and achieve the process of racemization of dextrorotatory imidazole in sodium hydroxide environment.

四咪唑的原料成本要比左旋咪唑低50%，其临床驱虫效果也要比左旋咪唑小50%。左旋咪唑的疗效是消旋体的两倍，毒性低一半。

A historical region of southwest France between the Pyrenees and the Garonne River. The duchy of Aquitaine was joined with France after the marriage of Eleanor of Aquitaine to King Louis VII in1137, but its possession was disputed after her subsequent marriage to Henry II of England.

阿基坦法国西南部一个历史地区，位于比利牛斯山和加隆河之间，在1137年阿基坦的埃莉诺与国王路易斯七世结婚之后阿基坦公国加入法国，但当她再嫁英国亨利二世后，其归属权便受到争议

There are moments when I look at the smiling , happy faces of my expectant staff and wonder how they will cope when confronted by an outraged housemaster along with an unrepentant and recalcitrant bleached blond teenager in 18 years ' time .

有时候，我看着那些满怀期待的员工微笑，幸福的脸，想着当他们遇到一位愤怒的宿舍管理员和一位不知悔改，叛逆，而且将头发染成白色的18岁少年时，他们会如何处理。