Chromium
['krəʊmɪəm] or ['kromɪəm]
解释:
(noun.) a hard brittle multivalent metallic element; resistant to corrosion and tarnishing.
手打:梅格--From WordNet
解释:
(n.) A comparatively rare element occurring most abundantly in the mineral chromite. Atomic weight 52.5. Symbol Cr. When isolated it is a hard, brittle, grayish white metal, fusible with difficulty. Its chief commercial importance is for its compounds, as potassium chromate, lead chromate, etc., which are brilliantly colored and are used dyeing and calico printing. Called also chrome.
校对:弗恩
例句:
- 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.
- Thus we have nickel, chromium, and tungsten steel. 威廉·亨利·杜利特. 世纪发明.
- The ruby, chemically considered, is crystallized alumina, or oxide of aluminum, with a small percentage of oxide of chromium. 佚名. 神奇的知识之书.
- He now turned to the use of almost infusible metals--such as boron, ruthenium, chromium, etc. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
- The new processes depend chiefly on the use of chromium compounds. 威廉·亨利·杜利特. 世纪发明.
- 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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