Cosmic ray spallation produces some light elements such as lithium and boron.This process was discovered somewhat by accident during the 1970s.是什么意思_Cosmic ray spallation produces some light elements such as lithium and boron.This process was discovered somewhat by accident during the 1970s.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句