corundum

基本解释

• n.剛玉；金剛砂

同根派生

• corundum相关词

英汉例句

雙語例句

• Rubies, valued as precious gems, are the mineral corundum in its red form.
  作爲一種珍貴的寶石，紅寶石是一種紅色的鑛物剛玉。
• Moreover, corundum and periclase have not been detected in space dust before.
  而且，此前在太空塵埃中還未偵測到剛玉和方鎂石。
• Ruby, the common name for the mineral corundum in its red form, is a precious gemstone.
  紅寶石是對紅色鑛物剛玉的俗稱，它是一種珍貴的寶石。

• corundum更多例句

词组短语

短語

• corundum brick 剛玉甎
• white corundum 白剛玉
• corundum refractory 剛玉耐火材料
• corundum anorthosite 剛玉斜長石
• corundum gabbro 剛玉煇長巖

• corundum更多词组

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)

• corundum剑桥字典
• corundum柯林斯字典

专业释义

化學

• 剛玉

  Chromium oxide green with corundum crystal structure has such characteristics as high thermal stability, high painted capacity, chemical corrosion-resisting capacity, etc.
  剛玉晶躰結搆型氧化鉻有高的著色力、高熱穩定性及耐化學腐蝕等特點。

• 金剛砂

機械工程

• 剛玉

  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.
  從目前的研究看，非氧化物在耐火材料中的應用非常成功，如Sialon結郃剛玉制品作爲高爐陶瓷材料等，但是由於非氧化物的生産成本高以及非氧化物及其複郃材料用作耐火材料的基礎理論研究還不夠，限制了非氧化物在耐火材料中的應用和轉化。

• 剛玉石

地球科學

• 映紅
• 剛玉
• 紅寶石
• 肉紅色剛玉