同位素

tóngwèisù

noun #12,358

Measure Word

一种同位素 zhǒng

Meanings

1 isotope

Characters

position; place

Examples

碳-14是碳的一种放射性同位素。

Tàn shísì shì tàn de yī zhǒng fàngshèxìng tóngwèisù.

Carbon-14 is a radioactive isotope of carbon.

科学家利用同位素来测定化石的年龄。

Kēxuéjiā lìyòng tóngwèisù lái cèdìng huàshí de niánlíng.

Scientists use isotopes to determine the age of fossils.

Tips

memory

同 (same) + 位 (position) + 素 (element) — isotopes occupy the same position on the periodic table but have different masses.

Stroke Order

同 tóng

位 wèi

素 sù