单词	tetrode
释义	tetrode noun tet·​rode ˈte-ˌtrōd  : a vacuum tube with a cathode, an anode, a control grid, and an additional grid or other electrode Word History First Known Use 1886, in the meaning defined above
随便看	roughhoused roughhouses roughhousing roughies roughing roughing (up) roughing in roughing it roughing mill roughing out roughing rolls roughing up roughish roughisher roughishest roughleg roughlegs roughlier roughliest roughly roughneck roughnecked roughnecking roughnecks roughness

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