| 单词 | gradient |
| 释义 | gradient /gray"dee euhnt/, n. 1. the degree of inclination, or the rate of ascent or descent, in a highway, railroad, etc. 2. an inclined surface; grade; ramp. 3. Physics. a. the rate of change with respect to distance of a variable quantity, as temperature or pressure, in the direction of maximum change. b. a curve representing such a rate of change. 4. Math. a differential operator that, operating upon a function of several variables, results in a vector the coordinates of which are the partial derivatives of the function. Abbr.: grad. Symbolically appearing as a downward pointing triangle. adj. 5. rising or descending by regular degrees of inclination. 6. progressing by walking; stepping with the feet as animals do. 7. of a type suitable for walking or running, as the feet of certain birds; gressorial. [1635-45; < L gradient- (s. of gradiens), prp. of gradi to walk, go, equiv. to grad- walk + -i- thematic vowel + -ent- -ENT] |
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