单词	heptode
释义	heptode noun hep·​tode ˈhepˌtōd plural -s : a vacuum tube with seven electrodes including a cathode, an anode, a control grid, and four additional grids or other electrodes Word History Etymology International Scientific Vocabulary hepta- + -ode
随便看	pick someone's pocket pick something clean pick the brains of pick to pieces pick to shreds pick tongs pick tree pick up pick up after pick up after (someone) pick up after someone pick up and go pick up and leave pick up and leave/go pick up momentum pick up on pick up speed pick up speed/momentum pick up steam pick up the bill pick up the check pick up the cudgels for pick up the gauntlet pick up the pace pick up the pieces

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