Therefore, the 1979 accident at the Three Mile Island nuclear power plant in the United States is rated at level five.

因此，1979年的美国三里岛核电厂核泄漏事故被定为5级。

youdao

Therefore, the 1979 accident at the Three Mile Island nuclear power plant in the United States is rated at level five.

因此，1979年的美国三里岛核电厂核泄漏事故被定为5级。

youdao