单词 | beta |
释义 | beta1 of 2noun be·ta ˈbā-tə chiefly British ˈbē- plural betas 1 : the 2nd letter of the Greek alphabet see Alphabet Table 2 : something or someone designated with the name beta or the Greek letter β especially denoting the second in position, order, or class 3 : a nearly complete prototype of a product (such as software) the beta version also : a stage of development in which a product is nearly complete but not yet ready for release The app is still in beta. 4 : beta particle beta emissions 5 : a measure of the risk potential of a stock or an investment portfolio expressed as a ratio of the stock's or portfolio's volatility to the volatility of the market as a whole Beta measures a stock's price volatility—or risk—compared with the market in general … 6 : beta wave The findings could also help scientists better understand other beta-associated disorders, such as Parkinson's disease or obsessive compulsive disorder … beta 2 of 2adjective : second in position in the structure of an organic molecule from a particular group or atom beta substitution —often used in combination —symbol β |
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