Titanium

(noun.) a light strong grey lustrous corrosion-resistant metallic element used in strong lightweight alloys (as for airplane parts); the main sources are rutile and ilmenite.

艾琳校对

• The ruby owes its fine red color to the presence of oxide of chromium; the sapphire its deep blue to either a lower oxide of chromium or to an oxide of titanium. 佚名. 神奇的知识之书.
• A great variety of methods for coating incandescent lamp filaments with silicon, titanium, chromium, osmium, boron, etc. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.

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