jackknife

美 [ˈdʒæknaɪf]英 [ˈdʒæknaɪf]
  • n.大折刀
  • vi.弯成V字形(如铰接货车失控时的弯折)

过去式: jackknifed 现在分词: jackknifing 过去分词: jackknifed 第三人称单数: jackknifes

jackknifejackknife

noun

【不规则形式】pl. jackknives

大折刀
a large knife with a folding blade

verb

V弯成V字形(如铰接货车失控时的弯折)
to form a V-shape. For example if a lorry/truck that is in two parts jackknifes , the driver loses control and the back part moves towards the front part.

jackknife

频次

  • 1
    VERB (铰接卡车失控时)弯成V字形,弯折
    If a truck that is in two parts jack-knifes, the back part swings around at a sharp angle to the front part in an uncontrolled way as the truck is moving.

    His vehicle jack-knifed, and crashed across all three lanes of the opposite carriageway.

    他的车弯成V字形,撞进了反方向车道,车身挡住了所有的3个车道。

noun

1
a dive in which the diver bends to touch the ankles before straightening out
2
a large knife with one or more folding blades
Synonym: clasp knife

verb

1
dive into the water bending the body at the waist at a right angle, like a jackknife

数据来源:WordNet

  1. The paper introduces one of variance reduction technigues Jackknife .

    本文介绍广泛应用于计算机模拟技术中的方差减少技术之一&Jackknife技术。

  2. An ecological application of jackknife method

    刀切法在生态学中的应用

  3. The model is examined to validate overall robustness with Jackknife tests .

    通过Jackknife法检验该模型具有总体稳健性。

  4. The Experimental Research of Applying Effect of Horizontal Bar Jackknife Upward Action Training Apparatus in Teaching Activities

    单杠屈伸上训练器在教学训练中运用效果的实验研究

  5. Jackknife estimation provide the range of clump intensity index .

    同时用刀切法对聚集度指标进行估计,给出其估计区间。

  6. The Estimation of the Genetic Variance in Field Trials of Rice Breeding Line by Jackknife

    水稻品系试验中遗传方差的刀切法估计

  7. The jackknifing method for estimating the index of diversity

    用刀切法估计多样性指数

  8. To fold or double ( something or oneself ) like a jackknife .

    折叠折刀似的折拢或折叠(某物或其自身)

  9. Applicaton of The Jackknifed method To Simultaneous Equation Econometric Model

    应用刀切法于经济计量的联立方程模型

  10. Application of Bootstrap and Jackknife in Forest Investigation

    自助法和刀切法在森林调查中的应用

  11. Jackknife Estimation of Functions of Means in Two-stage and Three-stage Simple Random Sampling Multivariate Populations

    二阶、三阶简单随机抽样时均值函数的jackknife估计

  12. Asymptotic normality about jackknife estimate of LSE of linear model

    线性模型LSE函数刀切估计的渐近正态性

  13. On Natural Resources Real Right Jackknifing Incomplete U-statistics

    论自然资源物权刀切不完全U统计量

  14. What do these course of jackknife have to distinguish ?

    重叠的这些科目有什么区别吗?

  15. Sampling and resampling : an efficient approximation to jackknife variance estimators

    抽样与重抽样:一个有效的刀切法方差估计的近似

  16. Be to say the course specialized subject of jackknife need not take an examination of undergraduate course what be still ?

    是说重叠的科目专科考了本科就不用再考了还是什么?

  17. A : Yes , simple ones like the swallow and jackknife but not fancy diving .

    甲:跳的,跳简单的例如燕式、弯身式,但不会跳花样。

  18. Bending of Moderately Thick Rectangular Plates with Simply Supported Edges Jackknifing Incomplete U-statistics

    四边简支矩形中厚板的弯曲刀切不完全U统计量

  19. In this paper , random weighting U-statistics are proposed based on jackknife pseudo-values .

    本文基于刀切虚拟值提出了对U-统计量的随机加权法。

  20. Statistical inferences based on sample quantiles and jackknife

    基于子样分位数和刀切法的统计推断

  21. Asymptotic design-unbiasedness of jackknife variance estimators in the presence of missing data

    缺失数据下Jackknife方差估计量的渐近设计无偏性

  22. The jackknife test is used to select optimal feature subset , e - valuate and compare our method with other existing methods .

    使用刀切检验选择最优特征子集和评估这个方法的性能。

  23. Jackknifing Incomplete U-statistics W-K Statistics of Best Linear Unbiased Estimate

    刀切不完全U统计量最佳线性无偏估计中的W&K统计量

  24. Bootstrap and Jackknife are statistical methods of non-parameter under the condition of small - samples on the estimated population .

    自助法和刀切法是在小样本条件下对总体进行估计的非参数统计方法。

  25. This paper , based on Jackknife Method , erects a financial distress alarm model and the empirical study , which proves to be effective .

    建立基于Jackknife检验的财务危机预警模型,实证研究表明本模型是有效的。

  26. Asymptotic Distribution About Jackknife Estimate of U-Statistics

    U&统计量函数刀切估计的渐近分布

  27. Compared with existing models , the overall classification accuracy in-creases about 1.02 ~ 25.16 percentile in the Jackknife test . 5 .

    与已有的分类模型相比,该模型的总体分类精度提高了1.02~25.16个百分点。

  28. The so-called square pen presents jackknife head-like started to write when , angular , regular script writing started to write method .

    所谓方笔即起笔时呈现折刀头状,棱角分明,是楷书书写的一种起笔方法。

  29. Who knows , they actually may be lounging at Starbucks rather than sitting in their car behind a jackknifed semi .

    谁知道呢,他们可能会在星巴克里面休闲,而不是呆在车里停在在长长的车龙中间。

  30. For the new dataset we constructed , the overall prediction accuracy of Re-substitution and Jackknife test were 97.33 % and 75.11 % respectively .

    针对我们自己整理的最新数据集,通过Re-substitution和Jackknife检验,总体预测精度分别为97.33%和75.11%。