corundum

基本解释

• n.刚玉；金刚砂

同根派生

英汉例句

双语例句

• Rubies, valued as precious gems, are the mineral corundum in its red form.
  作为一种珍贵的宝石，红宝石是一种红色的矿物刚玉。
• Moreover, corundum and periclase have not been detected in space dust before.
  而且，此前在太空尘埃中还未侦测到刚玉和方镁石。
• Ruby, the common name for the mineral corundum in its red form, is a precious gemstone.
  红宝石是对红色矿物刚玉的俗称，它是一种珍贵的宝石。

词组短语

短语

• corundum brick 刚玉砖
• white corundum 白刚玉
• corundum refractory 刚玉耐火材料
• corundum anorthosite 刚玉斜长石
• corundum gabbro 刚玉辉长岩

英英字典

柯林斯英英字典

• a white, grey, blue, green, red, yellow, or brown mineral, found in metamorphosed shales and limestones, in veins, and in some igneous rocks. It is used as an abrasive and as gemstone the red variety is ruby, the blue is sapphire. Composition: aluminium oxide. Formula: Al2O3. Crystal structure: hexagonal (rhombohedral)

专业释义

化学

• 刚玉

  Chromium oxide green with corundum crystal structure has such characteristics as high thermal stability, high painted capacity, chemical corrosion-resisting capacity, etc.
  刚玉晶体结构型氧化铬有高的着色力、高热稳定性及耐化学腐蚀等特点。

• 金刚砂

机械工程

• 刚玉

  For example, the refractory product of SiAlON bonded corundum is used for blast furnace and so on. But As high cost of non-oxide products and the poor basic theory study about it as refractory, the non-oxides refractory application is limited.
  从目前的研究看，非氧化物在耐火材料中的应用非常成功，如Sialon结合刚玉制品作为高炉陶瓷材料等，但是由于非氧化物的生产成本高以及非氧化物及其复合材料用作耐火材料的基础理论研究还不够，限制了非氧化物在耐火材料中的应用和转化。

• 刚玉石

地球科学

• 映红
• 刚玉
• 红宝石
• 肉红色刚玉