二氧化硅

On the basis of many times of experiments, the interference of alkaline insoluble matters and silicon impurities on the determination of monatomic silicon was discussed, and the method for the removal of main impurity component in industrial silicon was proposed.

分析了样品中的碱不溶物及硅质杂质对单质硅测定的干扰，提出了排除工业硅中主要杂质成分游离二氧化硅干扰的测定方法。

It was found that the thickness of the film can improved with adding some mucilage glue.

增粘剂的加入可提高一次涂膜的厚度，低温烧结可在金电极上得到表面光亮的二氧化硅玻璃薄膜，绝缘性能良好。

This series of products are made by special technics, in which nano- silica aerogels is adopted as leading material.

该系列产品以纳米二氧化硅气凝胶为主体材料，通过特殊制造工艺复合而成。

The results showed that nano- SiO_2 with a diameter of 40 nm was prepared under the optimal conditions.

在化学沉淀超声分散条件下，研究了体系pH值、表面活性剂种类、分散剂用量、干燥方式、超声分散等因素对产物纳米二氧化硅粒径的影响。

The mothed of quantitative analysis of silicon dioxide with silico-fluoride natrium volumetry is introduled and conditions are chosen.

主要介绍了用硅氟酸钠容量分析法测定二氧化硅含量的方法，并进行了测量条件的选择。

Silicon dioxide ; inductively coupled plasma atomic emission spectrometry ; fluorite ; nebulizer and torch resistant to hydrofluoric acid

二氧化硅；电感耦合等离子体原子发射光谱法；萤石；耐HF腐蚀的ICP雾化器和矩管系统

Then again , although made of the same silica material as glass , opal is quiet different and that difference is what makes this precious stone so wonderful .

再说，虽然取得了相同的二氧化硅材料为玻璃，蛋白石是安静的不同，以及不同的是，是什么使这一珍贵的石头，所以美好。

Silicon dioxide content of the multitudinous samples in the ore dressing test was assayed.

测定了选矿试验中大批量样品二氧化硅含量。

It is also found that the butyl group and imidazolium ring of the cation of the IL bottom layer are parallel to the graphite surface.

这种有序性是随着离子液体远离石墨表面接近体相而逐渐消失的。我们还同时研究了离子液体在带负电的二氧化硅表面的微观结构。

At the same, in view of the complication and great variation of heavy oil sewage quality, a new and high effective treatment process is developed.b. Al kind of contradictions in treating the heavy oil sewage are tried to consider systematically and perspectively, and try to avoid the negative effect brought about by the new process.c. When we analyze the contradictions in treating the heavy oil sewage, we combine the oil removal part, suspending material removal part and SlOa removal part to solve the specific problems by taking one anothers advantages and try to do the test repeatedly under the possible conditions.

广泛借鉴国内外稠油污水处理现有的研究成果和经验，并在此基础上努力发展新的思路，针对稠油污水水质复杂、变化较大的特性，探讨开发高效的净水药剂研究具有简捷、高效、耐冲击特点的新工艺；(2)努力从系统的、全面的角度考察和解决稠油污水处理工艺存在的各种矛盾关系，避免新工艺可能带来的负效应；(3)在分析稠油污水处理工艺中各种矛盾关系时，把除油部分、除悬浮物部分、除硬度部分、除二氧化硅部分有机的结合起来，借助各自的优势解决相应的具体问题。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。