1、The pitchblende is the chief industrial mineral.
瀝青軸礦是主要工業(yè)礦物。

2、The radiometric age of pitchblende is 109-108 m.
瀝青鈾礦的同位素年齡為108—109百萬(wàn)年。

3、The initial lead in pitchblende belongs to radioactive origin from crust.
瀝青鈾礦中的初始鉛屬地殼放射成因。

4、Then she found that pitchblende was more radioactive than uranium by itself.
于是她發(fā)現(xiàn)瀝青油礦，它的放射性要比鈾本身還要強(qiáng)。

5、Uranium mineral is pitchblende which was formed in Lower Proterozoic.
鈾礦物主要為瀝青鈾礦，形成于早元古代。

pitchblende翻譯