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引起了我的注意：某些矿物质(青铀矿物质、铀云
或钙铀云)
据其铀或针含量所判断的要高。
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引起了我的注意：某些矿物质(青铀矿物质、铀云或钙铀云)据其铀或针含量所判断的要高。
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