elongationn.
英 iːlɒŋ'geɪʃ(ə)n | 美 ɪ,lɔŋ'ɡeʃən
中文n. 伸长；伸长率；延伸率；延长
词根词源
elongation (n.)late 14c., from Medieval Latin elongationem (nominative elongatio), noun of action from past participle stem of Late Latin elongare "remove to a distance," from Latin ex- "out" (see ex-) + longus "long" (see long (adj.)).
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