氚

Tritium is one of the mildest radioactive isotopes.

氚是最和缓的放射性同位素之一。

More reactive are the heavier isotopes of hydrogen, deuterium and tritium.

更为活跃的是氢的较重同位素， 氘和氚。

Xenon lung scans may be helpful in the early diagnosis of inhalation injury.

氚肺扫描可能有助于早期诊断吸入性损伤。

ER binding sites in tumor were determinedby tritiated estradiol binding method.

用氚标记雌二醇结合法测定瘤内的ER结合位点数。

Tritium has a half - life of 12.4 years.

氚的半衰期为12。4年，地球形成时的氚早已不存在。