Method By using high sensitive negative voltage exhaled thoron progenycollection and measurement system, the thorium lung burdens of each dust exposed miner was obtained.
方法用高灵敏度负高压人呼出气中钍射气子体收集测量系统对每名被检矿工测定其肺内钍的沉积量。
2
If they don't own Warhol, they collect his progeny (ie, Messrs Koons and Hirst), so works such as "99 Cents" can be an important bridge in the collection.