| 单词 | spectrographic analysis |
| 例句 | Nine months later the FBI belatedly removed the curb, and a spectrographic analysis revealed metallic residue consistent with that of the lead core in Oswald’s ammunition. The Truth Behind JFK's Assassination The lab, led by respected scientist Prof Giovanni Canneri, subjected the material to spectrographic analysis and concluded that it contained the elements boron, silicon, calcium and magnesium, and that it was not radioactive. The day UFOs stopped play 2014-10-23T04:00:00Z "We could take a spectrographic analysis of some of those high magnitude stars," Carhill said. An Empty Bottle A spectrographic analysis of the steels confirmed the theory. Tom Swift and the Electronic Hydrolung |
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