Barium
['beərɪəm] or ['bɛrɪəm]
解释:
(noun.) a soft silvery metallic element of the alkali earth group; found in barite.
埃斯蒂斯整理--From WordNet
解释:
(n.) One of the elements, belonging to the alkaline earth group; a metal having a silver-white color, and melting at a very high temperature. It is difficult to obtain the pure metal, from the facility with which it becomes oxidized in the air. Atomic weight, 137. Symbol, Ba. Its oxide called baryta.
整理:利亚
解释:
n. the metal present in heavy spar (sulphate of baryta) and baryta formerly thought to be white but now known to possess a yellow colour.—adj. Bar′ic.
校对:沃尔多
例句:
- Radium, also discovered in thi s analysis of 1898, was associated with barium. 李贝. 西洋科学史.
- Among the high explosives of more recent date may be mentioned: _Tonite_ (gun cotton and barium nitrate), British patents No. 3,612, of 1874, and No. 2,742, of 1876. Edward W. Byrn. 十九世纪发明进展.
- An improvement consists in adding one ounce of carbonate of barium to the fluid while warm. 威廉K.戴维. 智者、化学家和伟大医生的秘密.
- Many other chemicals can be used, however, for making the fluorescing screen, such as the sulphides of calcium, barium and strontium. Edward W. Byrn. 十九世纪发明进展.
- It was quite a simple affair, and consisted of an observation tube with a lens, having in front of it a screen of fluorescing material, such as platino-cyanide of barium. Edward W. Byrn. 十九世纪发明进展.
- In some instances a chemical known as barium chloride is used, but the wisdom of this process has been much questioned, owing to the fact that barium chloride is a deadly poison. 佚名. 神奇的知识之书.
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