| 释义 |
arc/ɑ:k/ n. & v.●n. 1 part of the circumference of a circle or any other curve 弧，弓形 2 Electr. a luminous discharge between two electrodes 【电】电弧，弧光 ●v. intr. (arced /ɑ:kt/; arcing /ˈɑ:kiŋ/) form an arc 呈弧形；形成电弧 [Middle English via Old French from Latin arcus ‘bow, curve’] |