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英语例句库

But an unexpected fact was noted: certain minerals( pitchblende, chalcolite, autunite) had a greater activity than might be expected on the basis of their uranium or thorium content.

但是一个意外的事实的注意：某些矿物质(青铀矿物质、铀云母或铀云母)活性比根据其铀或针含量所判断的。

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We found that pitchblende contains at least two radioactive materials, one of which, accompanying bismuth, has been given the name polonium, while the other, paired with barium, has been called radium.

们发现沥青铀矿物中至少含有两种放射性物质：与铋伴生的命名为钋，与钡伴生的命名为镭。

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原声例句
TED-Ed（视频版）

Next, by focusing on a super radioactive ore called pitchblende, the Curies realized that uranium alone couldn't be creating all the radiation.

接下来， 通过专注于一种叫做沥青矿的超级放射性矿石，妇意识到本身不可所有的辐射。

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TED-Ed（视频版）

By 1902, the Curies had extracted a tenth of a gram of pure radium chloride salt from several tons of pitchblende, an incredible feat at the time.

到 1902 年，妇从几吨沥青矿中提取了十分之一克的纯氯化镭盐，这在当时是一项了不起的壮举。

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