silica

noun

1. 二氧化硅
   a chemical containing silicon found in sand and in rocks such as quartz , used in making glass and cement

1. 硅石;二氧化硅
   Silica is silicon dioxide, a compound of silicon which is found in sand, quartz, and flint, and which is used to make glass.

1. It is a compound of aluminum, silica, and fluorine.
   它是铝、硅和氟的化合物。
2. Spherical nanoscale silicon oxide have been prepared by hydrothermal deposition process using silicon and silica as the starting materials.
   以硅、二氧化硅为原料，采用水热沉积法制备了球状纳米硅氧化物。
3. The optical microscope photographs show that the molecular sieve is well dispersed in the silica sol.
   光学显微照片显示：分子筛能较好地分散在硅溶胶中。
4. Study of Silicon, Alumina and Fluoride Determination in Silicate Material by Potentiometry; It is a compound of aluminum, silica, and fluorine.
   电位法测定硅酸盐材料中二氧化硅、氧化铝和氟含量的方法研究它是铝、硅和氟的化合物。
5. It's high in silica and carbon.
   这种灰烬中富含二氧化硅和碳。
6. A new method for the preparation of gene carriers based on silica micro-particles was reported.
   建立了一种基于二氧化硅微颗粒的基因载体的制备新方法。
7. Any of various earths containing silica and alumina and ferric oxide; used as a pigment.
   任何一种含无水硅酸、氧化铝和氧化铁的泥土，用作颜料。
8. Pigment consisting of a limonite mixed with clay and silica.
   由褐铁矿与粘土、硅土混合而成的颜料。
9. This study aims to study the properties of silica aerogel composites and heat transfer simulation.
   研究了二氧化硅气凝胶隔热复合材料的结构与性能，并进行了瞬态传热模拟。
10. Objective To study the catalytic activity of gallium sulfate supported on silica gel in the synthesis of amyl hexanoate.
    目的研究硅胶固载硫酸镓在合成己酸戊酯工艺中的催化性能。
11. Yb-doped and Yb-Al-codoped high silica glasses have been prepared by sintering nanoporous glasses.
    通过对掺杂离子多孔玻璃的低温烧结，制备了掺镱高硅氧玻璃和镱铝共掺高硅氧玻璃。
12. You should also include folic acid, biotin and silica in your diet.
    您还应该包括叶酸，生物素和二氧化硅在您的饮食。
13. This paper to explore new technology to reduce the product of capillary phenomena, more easily washed silica;
    文章中探讨了新工艺减少产品的毛细现象，使白炭黑更容易洗涤；
14. Effect of temperature and stirring rate on the diameter and the monodispersity of silica spheres
    温度和搅拌速度对二氧化硅直径和单分散性的影响
15. Beneficiation removes clay and silica to considerable extent.
    富集操作除去粘土和硅石达到相当高的程度。
16. The present investigation is focus on the preparation process of silica-based ceramic mold using silica sol as binder.
    主要研究了以硅溶胶为粘结剂的硅基陶瓷型制备工艺。
17. He collected air samples including asbestos, lead, silica, mold, and metals.
    他进行过空气采样，包括石棉、铅、二氧化硅、霉菌和金属空气样品。
18. The adsorption isotherm of benzene, naphthalene and phenanthrene from cyclohexane solution onto silica gel has been determined.
    测定了硅胶自环己烷溶液中吸附苯、萘和菲的吸附等温线。
19. Can substitute for inorganic silica glass.
    还可作无机硅玻璃的代替品。
20. This dissertation deals with surface modification of inorganic nano-particles ( nanometer silica, alumina and titania).
    本论文主要研究无机纳米粒子（纳米氧化硅、氧化铝和氧化钛）的表面接枝改性。
21. Conclusion Chrysophanol and physcion could be effectively separated by silica gel column chromatography.
    结论硅胶柱色谱可以实现大黄酚和大黄素甲醚的高效分离；
22. Conclusion: Silica gel column chromatography and crystallization are simple and rapid methods to isolate gardenoside.
    结论：柱层析和重结晶方法是简单、速分离栀子苷的有效办法。
23. The silica nanoparticles do not have toxicity and can be used in vivo.
    硅纳米颗粒没有毒性并能在体内使用。
24. The structure and mechanical properties of silica sponge spicule found in China Bo-hai were studied.
    研究了我国渤海海域发现的一种硅质海绵骨针的结构和力学性能。
25. Melting behavior of silica flux in the converting process of high grade copper matte was investigated.
    研究了高品位铜冰铜转炉吹炼石英熔剂熔化行为。
26. Lanthanum-substituted bismuth titanate ( BLT) thin films were deposited on fused silica substrates by chemical solution deposition method.
    采用化学溶液沉积法和快速退火工艺在石英玻璃衬底上成功地制备了掺镧钛酸铋（BLT）铁电薄膜。
27. Preparation of silica mesoporous materials in a thin film geometry was first reported in1996.
    以薄膜的形式仿生制备二氧化硅中孔材料于1996年首次报道。
28. The silica with secondary particle structure was prepared by a two-step process, and its properties were investigated.
    采用两步工艺法制备具有二次微粒结构的白炭黑，并对其性能进行研究。
29. A heterogeneous bifunctional catalyst was synthesized by incorporating chiral amine and acid groups into silica.
    通过将手性胺和酸基团同时引入到二氧化硅表面制备得到了一种多相双功能催化剂。
30. Isoamyl butyrate was synthesized by using gallium sulfate supported on silica gel as the catalyst.
    以自制的硅胶固载硫酸镓为催化剂，正丁酸和异戊醇为原料合成了丁酸异戊酯。

noun

1. a white or colorless vitreous insoluble solid (SiO2)

   Synonym:    silicon oxidesilicon dioxide