isopoll

例句：

1. 1.The isotopes of carbon have different atomic numbers and masses.
   碳的同位素具有不同的原子序数和质量。
2. 2.Scientists are studying the isotopes of uranium to find new nuclear power sources.
   科学家们正在研究铀的同位素，以寻找新的核动力源。
3. 3. The isotopes of gold can be used in jewelry making because they have different colors and densities.
   金的同位素因其不同颜色和密度而被用于珠宝制造。