| 单词 | mass spectrograph |
| 例句 | As Lawrence expected, the skills of the mass spectrograph operators improved dramatically with experience, expanding the device’s capabilities; by mid-January, a nine-hour run yielded 18 micrograms of uranium enriched to 25 percent U-235. Big Science 2015-07-07T00:00:00Z Now Ernest launched a crash program to convert it into a gigantic mass spectrograph containing several calutrons, each with multiple ion sources and collectors. Big Science 2015-07-07T00:00:00Z Lawrence donated the unfinished 184-inch to the bomb effort by converting it to a mass spectrograph for the separation of uranium isotopes. Big Science 2015-07-07T00:00:00Z "If we knew how to use a mass spectrograph," said Ted. The Year When Stardust Fell |
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