| 单词 | elongation |
| 释义 | elongation [ē´loŋ`gā·shǝn] ASTRONOMY The difference between the celestial longitude of the moon or a planet, as measured from the earth, and that of the sun. COMMUNICATIONS The extension of the envelope of a signal due to delayed arrival of multipath components. MECHANICS The fractional increase in a material's length due to stress in tension or to thermal expansion. |
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