ultrafine

简明释义

英[ʌltrəˈfaɪn]美[ˌʌltrəˈfaɪn]

adj. 极其细小的，非常细微的

英英释义

单词用法

同义词

反义词

例句

1.The properties of alkane surfactant with carboxyl were studied in order to prepare ultrafine flake zinc powders.

摘要以制备超细鳞片状锌粉为目的，对羧酸烃类表面活性剂进行了研究。

2.Konjak mannan ultrafine grinding powder; obesity; rats; antiobesity effect.

魔芋超细粉末；肥胖症；大鼠；减肥作用。

3.It is precisely these ultrafine perceptions that activate the individual.

正是这些精细的感知使个体活化的。

4.Encountered in the surrounding gas steam will be cooled or the formation of ultrafine reaction.

蒸汽遇到周围的气体就会被冷却或发生反应形成超微粉。

5.In this paper, the preparation of ultrafine powder and its prospect in application to food industry were reviewed.

本文对超微粉体的制备方法及超微粉体在食品方面的应用前景进行了综述。

6.The Angle - distributive law of Ag ultrafine particles is studied.

研究了由溅射法产生的银超微粒的角分布规律。

7.The mechanochemical effect of barite particles is studied during the wet ultrafine grinding by using stirred mill.

研究了重晶石在搅拌磨湿法超细研磨过程中产生的机械力化学效应。

8.The product could be ultrafine powder based on customer accurate requirement.

本产品可以根据客户要求做超细粉末。

9.A new method of metal ultrafine particle producing has advanced.

研究了一种制备金属超微粒的新物理方法——溅射法。

10.The ultrafine dust from industrial processes can pose serious health risks if not managed properly.

如果不妥善管理，工业过程中的超细灰尘可能会对健康造成严重风险。

11.The researchers developed an ultrafine material that can filter out even the smallest pollutants from the air.

研究人员开发了一种超细材料，可以过滤掉空气中最小的污染物。

12.Using ultrafine powders in cosmetics can enhance the texture and application of the products.

在化妆品中使用超细粉末可以增强产品的质地和涂抹效果。

13.Engineers are exploring ultrafine coatings to improve the durability of various materials.

工程师们正在研究超细涂层，以提高各种材料的耐用性。

14.The ultrafine particles in the new sunscreen provide better protection against UV rays.

新型防晒霜中的超细颗粒提供了更好的紫外线保护。

作文

In recent years, the term ultrafine has gained significant attention in various fields, particularly in materials science and environmental studies. The word ultrafine refers to particles or materials that are extremely small, typically measuring less than 100 nanometers in diameter. This size range is crucial because it often leads to unique physical and chemical properties that differ from their larger counterparts. For instance, ultrafine particles can exhibit increased reactivity, enhanced strength, and improved electrical properties, making them invaluable in applications such as drug delivery, catalysis, and nanotechnology.One of the most fascinating aspects of ultrafine materials is their role in environmental science. Research has shown that ultrafine particles are prevalent in urban air pollution, stemming from sources like vehicle emissions and industrial activities. These tiny particles can penetrate deep into the lungs and even enter the bloodstream, posing serious health risks to humans. Understanding the behavior and impact of ultrafine particles is essential for developing effective air quality regulations and public health policies.Moreover, the production of ultrafine materials has found its way into various industries, including cosmetics, electronics, and pharmaceuticals. In the cosmetic industry, ultrafine titanium dioxide and zinc oxide are commonly used in sunscreens for their ability to provide broad-spectrum UV protection while remaining invisible on the skin. In electronics, ultrafine silver nanoparticles are employed in conductive inks and coatings, enhancing the performance of devices without adding significant weight.The synthesis of ultrafine materials often involves advanced techniques such as sol-gel processes, chemical vapor deposition, and laser ablation. These methods allow scientists and engineers to control the size, shape, and distribution of the particles, tailoring them for specific applications. As research continues to advance, we can expect to see even more innovative uses for ultrafine materials in the future.In conclusion, the significance of ultrafine materials cannot be overstated. From their unique properties and applications to their implications for health and the environment, understanding ultrafine particles is crucial in today's world. As we continue to explore the potential of these tiny materials, we must also remain vigilant about their impact on our health and environment, ensuring that advancements in technology do not come at the expense of our well-being. The study of ultrafine materials represents a fascinating intersection of science, innovation, and responsibility that will shape the future of multiple industries and our daily lives.

近年来，术语ultrafine在各个领域引起了广泛关注，特别是在材料科学和环境研究中。ultrafine这个词指的是极小的颗粒或材料，通常直径小于100纳米。这个尺寸范围至关重要，因为它往往导致与其较大对应物不同的独特物理和化学性质。例如，ultrafine颗粒可以表现出更高的反应性、增强的强度和改善的电气性能，使它们在药物传递、催化和纳米技术等应用中具有不可替代的价值。ultrafine材料最令人着迷的方面之一是它们在环境科学中的作用。研究表明，ultrafine颗粒在城市空气污染中普遍存在，源自车辆排放和工业活动等来源。这些微小的颗粒可以深入肺部，甚至进入血液，对人类健康构成严重威胁。理解ultrafine颗粒的行为和影响对于制定有效的空气质量法规和公共卫生政策至关重要。此外，ultrafine材料的生产已经渗透到化妆品、电子产品和制药等多个行业。在化妆品行业，ultrafine二氧化钛和氧化锌常用于防晒霜，因为它们能够提供广谱UV保护，同时在皮肤上保持隐形。在电子产品中，ultrafine银纳米颗粒用于导电油墨和涂层，提高设备的性能而不增加显著的重量。ultrafine材料的合成通常涉及先进的技术，如溶胶-凝胶过程、化学气相沉积和激光烧蚀。这些方法使科学家和工程师能够控制颗粒的大小、形状和分布，为特定应用量身定制。随着研究的不断进展，我们可以期待在未来看到更多创新的ultrafine材料应用。总之，ultrafine材料的重要性不容忽视。从它们独特的性质和应用到对健康和环境的影响，理解ultrafine颗粒在当今世界至关重要。随着我们继续探索这些微小材料的潜力，我们还必须对它们对我们健康和环境的影响保持警惕，确保科技进步不会以牺牲我们的福祉为代价。ultrafine材料的研究代表了科学、创新和责任的迷人交汇点，将塑造多个行业和我们日常生活的未来。