international standard source

• 国际标准源

international standard source的用法和样例：

例句

1. If the component of tritium is different between the level radioactive source and the sample, system error is produced, and it must be corrected.
   所用标准源成分如与试样不同，将带来系统误差，应予修正。
2. It proved that the airproof ability of standard sources prepared is fine for measuring the radioactivity of uranium series nuclide fully.
   证明制备的镭标准源密封性也非常好，完全能满足测量铀系核素的要求。