貝塔 bèitǎ beta Definitions Defs Origin Strokes Stroke Words Sentences Sents 贝塔斯曼 bèitǎsīmàn Bertelsmann German media conglomerate; international media and publishing company贝塔射线 bèitǎshèxiàn beta ray A stream of beta particles emitted by the radioactive decay of certain substances
