单词	at once … and
释义	at once … and1.■既…又…
随便看	graphite slipring graphite sodium reactor graphite sodium reactor (gsr) graphite sodium reactor {=gsr} graphite spheroid graphite spherule graphite stability graphite stack graphite--stack graphite steel graphite susceptor graphite tube coated with refratory metal carbide graphite-uranium graphiteuranium graphite-uranium lattice graphiteuranium lattice graphiteuranium--lattice graphite-uranium mixture graphite uranium pile graphite-uranium ratio graphite uranium reactor graphite-uranium reactor graphite-uranium--reactor graphite-water boiling superheater reactor graphite water-cooled reactor