In fact, the three codes are standard ones extensively used worldwide for decades in nuclear reactor engineering design, nuclear reactor radiation shielding safety analysis and other fields of nuclear energy research.是什么意思_In fact, the three codes are standard ones extensively used worldwide for decades in nuclear reactor engineering design, nuclear reactor radiation shielding safety analysis and other fields of nuclear energy research.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句