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- Lead aprons shield people from radiation. 铅做的工作裙可使人免进辐射。
- Radiation reached unheard-of levels. 辐射作用已达到前所未有的程度。
- helium radiation 氦离子照射, 氦离子辐射
- Helium and neon are inert gases. 氦和氖为惰性气体。
- The earth's atmosphere filters out much of the sun's radiation. 地球大气层可以滤掉太阳的大部分射线。
- The antimatter equivalent of helium. 反氦与氦等价的反物质
- Helium was discovered on the sun. 氦是在太阳上发现的。
- Most big balloons are now filled with helium. 现在许多大气球中充的是氦气。
- In the accident, the workers received a heavy dose of radiation. 在这次事故中，工人受到大剂量的辐射。
- A fountain of helium spurt out of the tube. 有一股氦的喷泉从小管中喷出。
- The most terrifying aspect of nuclear bombing is radiation. 核弹轰炸最可怕的一面是辐射。
- Helium is a gas used in balloons. 氦是一种用于气球的气体。
- The body cannot tolerate such large amounts of radiation. 身体经不住那么大剂量的放射线。
- The news of the radiation leak caused widespread public alarm. 辐射泄露的消息引起了公众的普遍恐慌。
- Atoms of hydrogen are fused to make helium. 氢原子可熔合成氦。
- The element of helium was first found in the sun. 氦元素最初是在太阳里发现的。
- To expose to or reveal by radiation. 暴露于射线用辐射手段暴露或发现某物
- You can be a helium hea without even trying. 你真是个大傻瓜，甚至连试都不试一下。
- Hydrogen provided more lift than helium. 氢气的上升性能优于氦气。
- It gets the hydrogen and helium right. 根据结果表示，氢元素和氦元素都比较正常。
