fulcrum
n.
in mechanics, "a prop, a support" (on which a lever turns), 1670s, from Latin fulcrum "bedpost, foot of a couch," from fulcire "to prop up, support" (see balk, n.).
| 词汇 | fulcrum |
| 词根词缀 | Online Etymology Dictionary fulcrum n. in mechanics, "a prop, a support" (on which a lever turns), 1670s, from Latin fulcrum "bedpost, foot of a couch," from fulcire "to prop up, support" (see balk, n.). |
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