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单词 fulcrum
释义

fulcrum


fulcrumrelative position of the fulcrum in three basic types of levers, with arrows indicating the direction of the effort and the downward force of the load

ful·crum

F0354500 (fo͝ol′krəm, fŭl′-)n. pl. ful·crums or ful·cra (-krə) 1. The point or support on which a lever pivots.2. Zoology An anatomical structure that acts as a hinge or a point of support.3. An agent through which vital powers are exercised.
[Latin, bedpost, from fulcīre, to support.]

fulcrum

(ˈfʊlkrəm; ˈfʌl-) n, pl -crums or -cra (-krə) 1. (Mechanical Engineering) the pivot about which a lever turns2. something that supports or sustains; prop3. (Zoology) a spinelike scale occurring in rows along the anterior edge of the fins in primitive bony fishes such as the sturgeon[C17: from Latin: foot of a couch, bedpost, from fulcire to prop up]

ful•crum

(ˈfʊl krəm, ˈfʌl-)

n., pl. -crums, -cra (-krə). 1. the support, or point of rest, on which a lever turns in moving a body. 2. any prop or support. 3. any of various structures in an animal serving as a hinge or support. [1665–75; < Latin: back-support of a couch]
fulcrumThis diagram shows the relative position of the fulcrum in the three basic types of levers, with arrows indicating the direction of the effort and the downward force of the load.top: The effort and load are on opposite sides of the fulcrum, as in a crowbar.middle: The load is between the fulcrum and effort, as in a wheelbarrow.bottom: The effort is between the fulcrum and load, as in a person's forearm, where the fulcrum is the elbow and the load is something held in the hand.

ful·crum

(fo͝ol′krəm) The point or support on which a lever turns.
Thesaurus
Noun1.fulcrum - the pivot about which a lever turnsfulcrum - the pivot about which a lever turnslever - a rigid bar pivoted about a fulcrumpivot, pin - axis consisting of a short shaft that supports something that turns

fulcrum

noun pivot, centre, heart, hinge, hub, focal point, kingpin The decision is the fulcrum of the Budget. axis, swivel, pivot, axle, spindle The metal bar served as a fulcrum.
Translations
fulcro

fulcrum


fulcrum:

see leverlever,
simple machine consisting of a bar supported at some stationary point along its length and used to overcome resistance at a second point by application of force at a third point. The stationary point of a lever is known as its fulcrum.
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fulcrum

[′fu̇l·krəm] (mechanics) The rigid point of support about which a lever pivots.

fulcrum

1. the pivot about which a lever turns 2. a spinelike scale occurring in rows along the anterior edge of the fins in primitive bony fishes such as the sturgeon
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