硅酸

In conclusion, Based on Leaf abaxial epidermis, Caryopsis morphology, Silica body, Molecular phylogeny, the present tresults differ from the tradtional study indicate that Perotis, Tragus and Zoysia are immerged into Chloridoideae the subfam. Eragrostis, the tresults of this thesis support the conclusion of Flora of China (Zhou T-Y et al, 2001) and the three genera is not independently treated as a tribe.

从叶表皮微形态、颖果和硅酸体形态以及分子系统学证据等方面来看，本文的研究结果与传统分类有所不同：结缕草属、锋芒草属、茅根属应放在虎尾草族，画眉草亚科，本文支持周太炎等(2001)《Flora of China》中的处理意见，取消结缕草族，将结缕草属、锋芒草属和茅根属做为虎尾草族的三个独立的属处理。

A fully ethoxy-terminated polymethylsilsesquioxane has been prepared via a dehydration ethanolysis reaction between absolute ethanol and an ordered ladder-like HO-Me-T, which improved long-term storage stability of HO-Me-T. Meanwhile, EtO-Me-T can still participate in the cross-linking reaction with hydroxy-terminated PDMS in the presence of catalyst.

利用含端羟基的LPS与无水乙醇之间的催化脱水反应合成了一种乙氧基为末端基团的活性梯形聚甲基倍半硅氧烷，有效地改善该类聚合物的长期稳定性；同时，该乙氧基封端聚合物仍然具有活性，可以代替常用的正硅酸乙酯与羟基硅油进行交联反应。

In this paper, the marine soft soil is mixed with 10% cement added with 0.5% NaOH and 0.5% Na2CO3 separately, which form two types of new cement-soils. Comparing with the undisturbed soil and the 20% cement-soil results in that the alkalescence additive can contribute to generate a large number of needle-like, rod-like or fibriform hydrate calcium silicate crystals. The hydrate calcium silicate crystals can inhibit the generation of calcic alum crystal which would bring expansive action. At the mean time, it can separate out hydrate calcium. The hydrate calcium silicate crystals and hydrate calcium constitute the filling and inclusions together among soil particles and on the surface of soil particles, which cut down the interstices of cement soil obviously. Therefore, the soil mass can be reinforced and the intensity can be improved.

现场试验中将海积软土与分别掺入0.5%NaOH和0.5%Na2CO3的10%水泥就地搅拌，形成两种新型水泥土，在与原状土及20%纯水泥土进行比较后，发现碱性外掺剂可以促使生成大量针状、棒状或纤维状水化硅酸钙晶体，抑制了能产生膨胀作用的钙矾石的生成，同时，有Ca2晶体析出，它们共同构成土颗粒间和土颗粒表面的充填物和包裹物，使水泥固化土的孔隙明显减小，密度和强度得到极大提高。

The results showed that three reasons caused the failure of the fibre materials:1the fibre materials transforming into powder which was caused by the precipitation of mullite at high temperatures;2cracking and spalling of the refractory coating and refractory fibre felt;3low strength of the refractory fibre flet.

结果表明：硅酸铝质耐火纤维在高温下析出莫来石晶体导致纤维材料的粉化，耐火涂层和耐火纤维毡的开裂、剥离脱落，耐火纤维毡强度很低是导致纤维材料失效的3个主要机理。研究结果为新型耐火材料的研制或改进提供了重要依据。

Process for the preparation of fluoboric acid from fluosilicic acid,a byproduct of phosphate was introduced.

阐述了利用磷肥副产氟硅酸制备氟硼酸的新工艺。

The principle of preparation for white carbon black is described, the influence of the concentration of fluosilicic acid, the dripping velocity of ammonia water, the reaction temperature and the curing time on the specific surface area of white carbon black are studied.

论述了白炭黑的制备原理，研究了氟硅酸浓度，氨水滴加速率，反应温度，陈化时间对白炭黑比表面积的影响。

The fluoroalkylsilane film was synthesized by using trimethylchlorosilane, fluosilicic acid and water as the precursors.

采用溶胶-凝胶法，以三甲基氯硅烷、氢氟硅酸和水为先驱体，在玻璃基片上用提拉法制备出一种含有-CF3强疏水性基团的氟硅烷薄膜。

Process Research of Second Stage Reaction at Preparing Cryolite from Fluosilicic acid-quality, Appearance and Filtering Performance of Cryolite

氟硅酸制冰晶石第二阶段过程研究－冰晶石质量、形貌及过滤性能，刘晓红；王贺云；李安-66文免费论文库，大学生论文库

It divided into two steps to prepare cryolite from fluosilicic acid, in the second step, cryolite is manufactured through the reaction of the ammonium fluoride solution with the sodium sulfate and the aluminum sulfate.

氟硅酸制取冰晶石分两步进行，第二步用得到的氟化铵溶液与硫酸钠和硫酸铝反应制冰晶石。

The conclusion is drawn that if the content of fluosilicic acid in wet-process phosphoric acid is less than 0.19% or the content of dialuminium trioxide in wet-process phosphoric acid is less than 1.47%, the elctrolysis would go on wheels.

另外，本文探讨了湿法磷酸中单一杂质对电解的影响，并得出只要氟硅酸含量低于0.19%、Al2O3含量低于1.47%时，电解就能够顺利进行。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。