corundum

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数据源: ai_enrichment
刚玉是一种硬度极高的矿物,主要成分为氧化铝,常用于制造磨料、宝石和耐火材料。

用法要点

句型搭配

通常用作不可数名词,表示物质或材料,在句子中作主语或宾语,描述其性质或用途。

• Corundum is used in abrasives.
• The hardness of corundum makes it valuable.

介词用法

常与介词如 'in'、'of'、'for' 搭配,表示在某种应用中的用途、组成或目的,例如在工业或地质语境中。

• Corundum in grinding wheels
• A sample of corundum

语域说明

主要用于科技、地质、材料科学等专业领域,日常对话中较少使用,属于学术或技术词汇。

• Technical report on corundum
• Geological survey mentions corundum

基础例句

I learned that corundum is a very hard mineral in science class.

我在科学课上学到,刚玉是一种非常坚硬的矿物。

This sandpaper uses corundum to make it more effective for smoothing wood.

这张砂纸使用刚玉,使其在打磨木材时更有效。

My friend collects gemstones, and she showed me a beautiful piece of corundum.

我的朋友收集宝石,她给我看了一块漂亮的刚玉。

高级例句

In the manufacturing sector, corundum is essential for producing high-precision abrasive tools.

在制造业中,刚玉对于生产高精度磨具至关重要。

The geological study identified corundum deposits in the region, indicating potential for mining operations.

地质研究在该地区发现了刚玉矿床,表明有采矿潜力。

Corundum's thermal stability makes it a preferred material for refractory linings in industrial furnaces.

刚玉的热稳定性使其成为工业炉耐火衬里的首选材料。

高频搭配

verb

use corundummine corundumprocess corundumsynthesize corundumgrind with corundum

adjective

synthetic corundumnatural corundumpure corundumhard corundumabrasive corundum

noun

corundum powdercorundum crystalcorundum abrasivecorundum gemstonecorundum refractory

adverb

highly abrasive corundumcommonly used corundumindustrially important corundum

preposition

corundum in industrycorundum of high qualitycorundum for grinding

phrase

corundum-based materialscorundum mining operationscorundum processing plant

常见错误

❌ 错误:I bought a corundum for my ring.
✓ 正确:I bought a corundum gemstone for my ring.

错误:'corundum' 作为物质名词通常不可数,直接说 'a corundum' 不自然。正确:应指定为 'a corundum gemstone' 或其他具体形式,以明确指代宝石或其他制品。

❌ 错误:Corundum are used in many industries.
✓ 正确:Corundum is used in many industries.

错误:'corundum' 是不可数名词,动词应用单数形式 'is'。正确:改为 'Corundum is' 以符合语法规则,避免主谓不一致。

近义词辨析

alumina

'alumina' 指氧化铝的化学名称,更侧重于化学成分;'corundum' 指天然或合成的矿物形式,强调其物理性质和用途。

Alumina is refined to produce synthetic corundum for industrial applications.

emery

'emery' 是一种含刚玉的天然磨料混合物,通常颗粒较粗;'corundum' 更纯,可用于精细磨削和宝石。

Emery paper is coarser, while corundum abrasives are used for precision grinding.