An hour later the next lighter stable isotope, xenon 134, appeared.
An hour later the next lighter stable isotope, xenon 134, appeared.
一小时之后，略轻一点的稳定同位素氙134出现。
An hour later the next lighter stable isotope, xenon 134, appeared.
一小时之后，略轻一点的稳定同位素氙134出现。