名词
中文翻译：氡针
同义词：
['radium needle', 'radioactive needle']
例句：
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1.The radon needle was used to detect the presence of radioactive materials in the area.
使用氡针探测该地区的放射性物质的存在。
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2. The radon needle was a crucial tool for testing the safety of underground facilities.
氡针是测试地下设施安全性的关键工具。
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3. The radon needle was used to measure the level of radon gas in the building.
使用氡针测量建筑物中氡气的水平。