... radioactive atom 放射性原子 radioactive counter 放射性计数器 radioactive decay 放射性衰变 ...
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The unnamed enthusiast brought radioactive materials, as well as a Geiger counter which he ordered from the United States.
这为匿名核能爱好者自备一堆放射性原材料，还有一个盖格辐射剂量仪，这些东西都是他从美国订购的。
Tooby recalled, while still a student, using a Geiger counter to show a custodian that his household Chinaware was more radioactive than other objects nearby.
Tooby回忆到，当他还是学生时，他曾用盖革计数器向一家人表明，他家的瓷器比周围其他物品更具放射性。
The Geiger counter registered a high concentration of radioactive particles.
盖革计数器示出放射性粒子的高浓度。
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