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jackknife    
n. 大折合式刀,镰刀式跳水
vi. 弯身
vt. 用大折刀切

大折合式刀,镰刀式跳水弯身用大折刀切

jackknife
n 1: a large knife with one or more folding blades [synonym: {clasp
knife}, {jackknife}]
2: a dive in which the diver bends to touch the ankles before
straightening out
v 1: dive into the water bending the body at the waist at a
right angle, like a jackknife

Jackknife \Jack"knife`\, n.
A large, strong clasp knife for the pocket; a pocket knife.
[1913 Webster]

75 Moby Thesaurus words for "jackknife":
adz, ax, belly buster, belly flop, belly whopper, bread knife,
bushwhacker, butcher knife, cannonball, carving knife, chaser,
chisel, cleaver, clipper, clippers, crash dive, dagger, dive, drop,
fall, gainer, gouge, hack, hatchet, header, hoe, hunting knife,
knife, lance, lancet, letter-opener, machete, mattock, nippers,
nose dive, paper cutter, paper knife, parachute jump, paring knife,
penknife, pick, pickax, pitch, plowshare, plunge, pounce,
power dive, razor, razor blade, running dive, saw knife, sax,
scalpel, scissors, scoop, scraper, scuffle hoe, scythe, share,
shears, sheath knife, sickle, sidecutters, sky dive, snips, spear,
spokeshave, stationary dive, stoop, surgical knife, swan dive,
swoop, sword, table knife, wedge

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  • Jackknife resampling - Wikipedia
    Jackknife resampling Schematic of jackknife resampling In statistics, the jackknife (jackknife cross-validation) is a cross-validation technique and, therefore, a form of resampling It is especially useful for bias and variance estimation The jackknife pre-dates other common resampling methods such as the bootstrap
  • JACKKNIFE Definition Meaning - Merriam-Webster
    The meaning of JACKKNIFE is a large strong pocketknife How to use jackknife in a sentence
  • Jackknife Resampling - GeeksforGeeks
    Jackknife resampling is a classic statistical technique used to estimate the bias and variance of a statistic, particularly when the sample size is small or the theoretical distribution of an estimator is complex It is part of the family of resampling methods, which includes the bootstrap and cross-validation
  • What Is a Jackknife? Multiple Meanings Explained
    A jackknife is a term used across several different fields, and they all trace back to the same image: a large folding pocket knife that bends at a pivot point Whether you’re reading about a truck accident, a core exercise, a statistical method, or a dive, the word “jackknife” describes something that folds sharply in the middle The term first appeared in American English around 1711
  • JACKKNIFE | definition in the Cambridge English Dictionary
    JACKKNIFE meaning: 1 If a truck that has two parts jackknifes, one part moves around so far towards the other part… Learn more
  • Resampling Data: Using a Statistical Jackknife
    The basic jackknife recipe is to treat the pseudovalues psi(X) as if they were independent random variables with mean μ One can then obtain con- ̄dence intervals and carry out statistical tests using the Central Limit The-orem
  • JACKKNIFE definition in American English | Collins English Dictionary
    4 senses: 1 a knife with the blade pivoted to fold into a recess in the handle 2 a former name for a type of dive in which Click for more definitions
  • What is a Jackknife and How To Avoid It | Pride Transport
    A jackknife accident is a truck accident that happens when the tractor-trailer begins to overtake the cab This movement leads to a “V” shape If the trailer begins to swivel and swing to the side, the jackknife could cross multiple lanes, collide with items off to the side of the road, cause the vehicle to roll onto its side, and cause other issues In fact, the Federal Motor Carrier
  • Jackknife - Definition, Meaning Synonyms | Vocabulary. com
    A knife with a blade that folds closed is called a jackknife Most jackknives are compact enough to fit in a pocket, but we don't suggest your taking one to school





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