For no other new radioactive substance have such positive results been obtained.

其他任何一种新的放射性物质尚未取得如此积极的结果。

youdao

The original plan was to encase a small amount of a radioactive substance in a protective steel container.

原先计划是要将少量的放射性物质封存在一个钢质防护罩中。

youdao

A new method of measuring indoor radioactivity of radon is presented by using the indoor fast-moving ball as the sample of a radioactive substance.

给出了一种用室内快速运动的球体作为放射性样品测量室内氡射气辐射活度的新方法。

youdao

Mr Litvinenko died in 2006 after he was apparently poisoned with the radioactive substance polonium-210.

BBC: Alexander Litvinenko murder was 'London nuclear terror'

Tritium is a radioactive substance produced by the reactors from nuclear-powered submarines based at the Devonport yard.

BBC: Tritium is released from submarine reactors

Meanwhile, Japan's recall of Meiji baby formula because of pollution by a radioactive substance has also raised a lot of concern.

BBC: China morning round-up: WTO membership marked