单词	betatron
释义	betatron /ˈbiːtətrɒn / noun Physics An apparatus for accelerating electrons in a circular path by magnetic induction.In August 1948, the American Military Government in Germany denied a request by scientists in Göttingen to have Siemens & Halske (now Siemens) build a 30MeV betatron.... Chicago's west side VA was still running an Allis Chalmers betatron for radiation therapy 20 years after the unit was obsolete. This enables to use betatrons for control of large-size luggage on presence of fissile materials. Origin 1940s: from beta + -tron.
随便看	well-quartered well-raised well-ranged well read well-reared well-reasoned well-received well-recorded well-reeve well-refined well-reformed well-regulated well-remembered well-repaired well-replenished well-reputed well-researched well-respected well-rested well-rewarded well-ribbed well rig well-rigged well-ringed well-ripened

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