silica

简明释义

英[ˈsɪlɪkə]美[ˈsɪlɪkə]

n. 二氧化硅；[材]硅土

n. （Silica）人名；（罗）西莉卡

英英释义

单词用法

同义词

反义词

例句

1.As the coal burns, particles of silica are released with the vapor and inhaled.

随着煤的燃烧，二氧化硅的颗粒跟随水蒸气被释放到大气中，然后被人体吸入。

2.The silica in cucumber is an essential component of healthy connective tissue, which includes muscles, tendons, ligaments, cartilage, and bone.

黄瓜中的硅是健康的结缔组织的重要组成部分，结缔组织包括肌肉、肌腱、韧带、软骨和骨。

3.The silica coating prevents the water droplets from combining and turning back into a liquid.

硅层可防止小水滴结合在一起，重新回归液态。

4.Aerogel is nicknamed "frozen smoke" and is made by extracting water from a silica gel, then replacing it with gas such as carbon dioxide.

气凝胶的一个绰号是“固态烟”，通过从硅胶中抽去水分代之以气体(比如用二氧化碳)制成。

5.By comparison the density of silica aerogels - the world's lightest solid materials - is only as low as 1.0mg per cubic cm.

相比之下，世界上最轻的固体材料——硅土气凝胶的密度最小也要每立方厘米1.0毫克。

6.These membranes are made of three layers of a conducting material, titanium nitride, separated by insulating layers of silica.

这些膜使用三层导电材料，氮化钛制成，中间隔着硅土绝缘层。

7.They took something called rice husk ash: the leftover husks from processing rice is burned for energy, and the ash remains. It's high in silica and carbon.

他们用到了稻壳灰(也就是稻谷脱粒之后焚烧稻壳剩下的灰烬，其中富含二氧化硅和碳)，经过简单处理后开发出一种制造隔热板的新材料。

8.XPT, as it is called, is a roughly 2cm-thick sheet of silica particles glued together with a strong, heat-resistant resin.

因为被称为XPT材料，是一个大约2厘厚米的二氧化硅粒子的薄板，与强大的耐热树脂粘在一起。

9.Engineers often use silica gel to control humidity in packaging.

工程师们常常使用硅石胶来控制包装中的湿度。

10.The presence of silica in soil affects its drainage properties.

土壤中硅石的存在影响其排水性能。

11.In the production of concrete, silica is essential for strength.

在混凝土的生产中，硅石对强度至关重要。

12.The glass is made from high-quality silica.

这种玻璃是由高质量的硅石制成的。

13.Many skincare products contain silica for a smooth texture.

许多护肤品中含有硅石以获得光滑的质地。

作文

Silica, or 二氧化硅, is one of the most abundant minerals found in the Earth's crust. It is primarily composed of silicon and oxygen, and its chemical formula is SiO2. Silica exists in various forms, including crystalline and non-crystalline (amorphous) structures. The crystalline form, such as quartz, is commonly found in sand and rocks, while the amorphous form is often found in natural deposits like diatomaceous earth. Understanding the properties and applications of 二氧化硅 is crucial for various industries, including construction, electronics, and even food production.In the construction industry, 二氧化硅 is a key ingredient in concrete and cement. Its strength and durability contribute to the overall integrity of buildings and infrastructure. When mixed with water and other materials, 二氧化硅 helps create a solid foundation that can withstand various environmental conditions. Moreover, the use of silica sand in concrete enhances its workability and reduces shrinkage during the curing process.In the field of electronics, 二氧化硅 plays a vital role in the manufacturing of semiconductors and integrated circuits. Silicon, derived from 二氧化硅, is a fundamental material used in the production of computer chips. The semiconductor industry relies heavily on the purity and quality of 二氧化硅 to ensure optimal performance of electronic devices. As technology advances, the demand for high-purity silica continues to grow, driving innovation in extraction and processing techniques.Additionally, 二氧化硅 has applications in the food industry. It is often used as an anti-caking agent in powdered foods, preventing clumping and ensuring smooth texture. This is particularly important in products like powdered sugar, spices, and salt. The safety and effectiveness of 二氧化硅 as a food additive have been widely studied, and it is generally recognized as safe when used appropriately.Environmental considerations surrounding 二氧化硅 are also important. While it is a naturally occurring substance, excessive exposure to crystalline silica dust can pose health risks, leading to respiratory issues and diseases such as silicosis. Therefore, regulations and guidelines are in place to protect workers in industries where silica dust is prevalent. Employers are encouraged to implement safety measures, including proper ventilation and protective equipment, to minimize exposure.In conclusion, 二氧化硅 is a versatile mineral with significant importance across multiple sectors. Its role in construction, electronics, and food production highlights its value in modern society. However, it is essential to approach its use with caution, considering the potential health risks associated with exposure to silica dust. By understanding both the benefits and challenges of 二氧化硅, we can better appreciate its impact on our daily lives and the economy.

二氧化硅是地壳中最丰富的矿物之一。它主要由硅和氧组成，化学式为SiO2。二氧化硅以多种形式存在，包括结晶和非结晶（无定形）结构。结晶形式，如石英，通常存在于沙子和岩石中，而无定形形式则常见于天然沉积物如硅藻土。理解二氧化硅的性质和应用对建筑、电子甚至食品生产等各个行业至关重要。在建筑行业，二氧化硅是混凝土和水泥的重要成分。它的强度和耐久性有助于建筑物和基础设施的整体完整性。当与水和其他材料混合时，二氧化硅有助于创建一个能够承受各种环境条件的坚固基础。此外，在混凝土中使用硅砂可以提高其可加工性，并减少在固化过程中的收缩。在电子领域，二氧化硅在半导体和集成电路的制造中起着至关重要的作用。从二氧化硅中提取的硅是生产计算机芯片的基本材料。半导体行业在很大程度上依赖于二氧化硅的纯度和质量，以确保电子设备的最佳性能。随着技术的进步，对高纯度二氧化硅的需求不断增长，推动了提取和加工技术的创新。此外，二氧化硅在食品工业中也有应用。它通常用作粉状食品中的抗结剂，防止结块并确保光滑的质地。这在糖粉、香料和盐等产品中尤为重要。关于二氧化硅作为食品添加剂的安全性和有效性已经进行了广泛研究，适当使用时通常被认为是安全的。围绕二氧化硅的环境考虑也很重要。虽然它是一种自然存在的物质，但过度接触结晶二氧化硅尘埃可能会带来健康风险，导致呼吸问题和如矽肺病等疾病。因此，针对二氧化硅尘埃普遍存在的行业，制定了保护工人的法规和指南。雇主被鼓励实施安全措施，包括适当的通风和防护设备，以尽量减少暴露。总之，二氧化硅是一种多用途矿物，在多个行业中具有重要意义。它在建筑、电子和食品生产中的作用突显了其在现代社会中的价值。然而，必须谨慎使用，考虑到接触硅尘的潜在健康风险。通过了解二氧化硅的好处和挑战，我们可以更好地欣赏它对我们日常生活和经济的影响。