单词 | Van de Graaff generator |
释义 | Van de Graaff generator(ˈvæn də ˌɡrɑːf) noun a device for producing high electrostatic potentials (up to 15 million volts), consisting of a hollow metal sphere on which a charge is accumulated from a continuous moving belt of insulating material: used in particle accelerators Word origin C20: named after R. J. Van de Graaff (1901–67), US physicist |
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