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单词
helicoidal
释义
WordReference Random House Unabridged Dictionary of American English © 2024
hel•i•coid
(hel
′
i koid′, hē
′
li-),
USA pronunciation
adj.
coiled or curving like a spiral.
n.
Mathematics
[
Geom.
]
a warped surface generated by a straight line moving so as to cut or touch a fixed helix.
Greek
helikoeidé̄s
of spiral form. See
helic
-, -
oid
1690–1700
hel′i•coi
′
dal
,
adj.
hel′i•coi
′
dal•ly
,
adv.
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firmament
firman
firmer chisel
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firmness
firmware
firn
firnification
firry
first
first aid
first--aid
first-aid
first-aider
first amendment
first axiom of countability
first balkan war
first base
first baseman
first-born
firstborn
first cause
first-cause argument
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更新时间:2025/8/1 6:07:33