查询词典 alumina

In the high alumina cement , dicalcium aluminate silicate is transformed into Q phase.

将高铝水泥中的惰性成分硅铝酸二钙(C2AS)转化为水化活性良好的Q相，组成Q相铝酸一钙七铝酸十二钙(C12A7)高铝水泥系统，对此系统的烧成条件进行研究。

In addition, we also discussed the effect of the granularities of the powders and the added phases on the mechanical properties of the alumina-based diphase ceramics.

另外本文还讨论了原料粉末的起始粒度和添加相对氧化铝基复相陶瓷的影响。

There were many researches on Al2O3-based diphase ceramics, but few of them focused on the methods of the fracture toughness measurement of alumina-based diphase ceramics.

见于报道的Al_2O_3基复相陶瓷的研究虽多，但是关注于氧化铝基复相陶瓷断裂韧性测试方法上的研究却并不多见。

The main radiation cavity of the furnace consists of a high-purity alumina tube 25cm long x7cmi.d., heated by molybdenum disilicide elements.

加热炉里的主要辐射腔是一条内直径7公分，长25公分的高纯度氧化铝管，由二硅化钼元素加热。

The main radiation cavity of the furnace consists of a high-purity alumina tube 25cm long x7cmi.d., heated by Molybdenum rod disilicide elements.

加热炉里的主要辐射腔是一条内直径7公分，长25公分的高纯度氧化铝管，由二硅化钼元素加热。

The effects of resins ratio, proportion of resin presents, different kinds of ceramic particles, impact angle, velocity of the erodent (alumina, silicon dioxide and calcite) and impact time (expressed by the weight of being used erodent) were demonstrated.

研究了树脂的配比、涂层中树脂的含量、增强体的种类、冲蚀粒子(刚玉、二氧化硅和方解石粉)的速度、冲蚀角度和冲蚀时间(用冲蚀粒子的用量来表示)等因素对涂层的冲蚀率的影响。

The topology models of MFIand MOR were built and the method of Configurational-bias Monte Carlosimulation was used for investigating the adsorption and distributions of ethanethiolas adsorbate in MFI and MOR type zeolites. The diffusion of ethanethiol in MFI andMOR type zeolites was studied by molecular dynamics simulation.The results show, the concentration of Zn2+ is the most important factor of theloading quantity of zeolite 13X and alumina, and the temperature secondly. The pHvalue which range from 2 to 3 effects on the loading quantity faintly.

构建了MFI 和 MOR 两种拓扑结构沸石的数学模型，以乙硫醇分子作为被吸附的目标物，采用偏倚蒙特卡罗方法模拟乙硫醇在MFI和MOR沸石上的吸附行为及分子分布密度，并利用分子动力学模拟乙硫醇在这两种拓扑结构的扩散行为，为实现面向硫化物进行吸附剂的微观结构设计作初步探索。

When the amount of hydrochloric acid added in hydrolysis process of aluminum ethoxide was relatively high, the formed AlCl〓 could enhance the self-pulverization of fibrillar γ-AlOOH powders during its dehydration process and lead to the formation of amorphous ultrafine alumina powders with the particle size of 3～5nm, which could melt and become glass like at 500℃, and then become spherical by crystallization.

当盐酸与乙醇铝的摩尔比从0.0增加到0.04时，粉末成球温度从1200℃降到500℃；在高酸量时形成的AlCl〓，能促进γ—AlOOH脱水时的自粉碎效应，生成无定形的超细Al〓O〓粉末，粒径为3~5nm，在500℃经熔化形成玻璃态，再晶化成球，而在其它情况下，粉末靠收缩经表面扩散方式成球。

For example, glasses containing MgO where dolomite is cheaper than limestone, and low alumina glasses where feldspar or feldspathic sands are at a premium.

再举个例子，在白云石比石灰石廉价的地区出产的玻璃里会含MgO；在长石或长石质砂价格高涨的地区会出产低铝玻璃。

A series of light-weighted metal coated functional composites have been fabricated by electroless metal plating on activated ultrafine particles, with nickel or copper as the shell, ultrafine particles as the core templates, such as alumina, titania, ferriferous oxide, natural pollen, hollow microspheres.

结合分子自组装技术在硅片表面制备了密堆积的胶体钯纳米薄膜，并首次提出了一种无需氯化亚锡敏化、基于分子自组装膜化学吸附胶体钯纳米微粒的活化方法，成功地引发了金属铜或镍在金属与非金属表面的无电子沉积，制备了一系列金属包覆非金属粉末的轻质超细核壳结构功能材料。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。