对历年发表在同位素表上的资料进行了比较，发现人工放射性同位素的数目随时间呈极好的线性关系，新的人工放射性同位素发现率约为每年50种。

It has been found that the increase of the number of artificial radioisotopes with the years is beautifully linear with a discovery fate of approximately 50 new artificial radioisotopes per year.

youdao

对历年发表在同位素表上的资料进行了比较，发现人工放射性同位素的数目随时间呈极好的线性关系，新的人工放射性同位素发现率约为每年50种。

It has been found that the increase of the number of artificial radioisotopes with the years is beautifully linear with a discovery fate of approximately 50 new artificial radioisotopes per year.

youdao