| 单词 | helicoid |
| 释义 | helicoid —helicoidal, adj. —helicoidally, adv. /hel"i koyd', hee"li-/, adj. 1. coiled or curving like a spiral. n. 2. Geom. a warped surface generated by a straight line moving so as to cut or touch a fixed helix. [1690-1700; < Gk helikoeidés of spiral form. See HELIC-, -OID] |
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