isotopic examination

例句：

1. 1. The isotopic examination of the samples revealed a significant amount of radioactive material.
   样本的同位素检验揭示了大量放射性物质。
2. 2. The scientists conducted an isotopic examination to determine the origin of the rare metal.
   科学家们进行了同位素检验，以确定这种稀有金属的起源。
3. 3. During the isotopic examination, the team carefully analyzed the data and compared it with previous findings.
   在同位素检验期间，团队仔细分析了数据并与之前的发现进行了比较。