| 单词 | parameter |
| 释义 | parameter —parametric /par'euh me"trik/, parametrical, adj. /peuh ram"i teuhr/, n. 1. Math. a. a constant or variable term in a function that determines the specific form of the function but not its general nature, as a in f(x) = ax, where a determines only the slope of the line described by f(x). b. one of the independent variables in a set of parametric equations. 2. Statistics. a variable entering into the mathematical form of any distribution such that the possible values of the variable correspond to different distributions. 3. Computers. a variable that must be given a specific value during the execution of a program or of a procedure within a program. 4. Usually, parameters. limits or boundaries; guidelines: the basic parameters of our foreign policy. 5. characteristic or factor; aspect; element: a useful parameter for judging long-term success. [1650-60; < NL parametrum. See PARA-1, -METER] Usage. 4, 5. Some object strongly to the use of PARAMETER in these newer senses. Nevertheless, the criticized uses are now well established both in educated speech and in edited writing. |
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