You have to be cautious when you use these radioactivity material. 你們使用這些放射性物質的時候一定要非常小心。
The radioactive material is stored in a special radiationproof container. 放射性物質被儲存在一個特製的防輻射的容器里。
The radioactive material is stored in a special radiation-proof container. 放射性材料貯存在防輻射的特殊容器內。
Tongchuan city officials believe the radioactive material - and its protective container - are likely to have been melted down. 銅川市官員認為，這快放射性材料，及其保護外殼，可能已經被熔化了。
The formed active material in the stamped grids becoming loose in the grid openings and the battery failed. 沖孔板柵形成后的活性物質在板柵的孔中變得鬆散，因而使蓄電池失效。
Aromatase immunoreactive material was distributed in the cytoplasm with negative nuclei. 芳香化酶免疫活性物質分佈在胞質，核為陰性。
