jackknife

noun

1. 大折刀
   a large knife with a folding blade

verb

1. 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.

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.
   1. 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。

1. 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。
2. Arch spat some more tobacco juice on his boot top and whetted the jackknife blade some more.
   阿奇又朝靴面上吐了些烟沫，再把大折刀磨了几下。
3. 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？
4. Dive into the water bending the body at the waist at a right angle, like a jackknife. A huge bus now swung into view from further round the bend.
   跳入水中前弯身的一种跳水方法，像大折刀一样。一辆大型公共汽车从急转弯处的远方映入眼帘。
5. This paper studies linear regression models with dependent errors, and we introduce the jackknifed least squares estimator and generalized jackknife least squares estimator.
   在误差为相依的情况下，讨论了线性回归模型的刀切最小二乘估计与广义刀切最小二乘估计。
6. What do these course of jackknife have to distinguish?
   重叠的这些科目有什么区别吗？
7. 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）
8. An ecological application of jackknife method
   刀切法在生态学中的应用
9. 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
10. Asymptotic Distribution About Jackknife Estimate of U-Statistics
    U&统计量函数刀切估计的渐近分布
11. 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。
12. Our performance study shows that the algorithm is efficient on typical mushroom dataset and synthetic data. The obtained results are quite promising by the three typical test methods ( Self-consistency, Jackknife and Independent dataset) in statistics.
    实验表明，本文提出的算法在典型的蘑菇数据集及人工合成数据集测试中具有很好的结果。利用统计学中Self-consistency，Jackknife和Independentdataset3种典型方法检验SLLE的降维结果，取得了明显的效果。
13. With a jackknife test on the EH_2427 data set containing four different subcellular locations, the total prediction accuracy reached 88.1% which was higher than all the other methods including the single fuzzy K-NN method.
    对包含四类亚细胞位置的RH2427数据集进行jacknife测试，总预测精度达到88.1%，好于包括单一模糊k近邻在内的多种其它预测方法。
14. Statistical inferences based on sample quantiles and jackknife
    基于子样分位数和刀切法的统计推断
15. 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。
16. 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。
17. 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
18. In this paper some resampling methods for the extrema of certain conditional functions are examined. Some methods of estimator of γ~ 2 are offered, including delete-d jackknife, delete-1 jackknife and bootstrap method.
    本文对一定条件下样本函数极值的重采样方法进行了研究，给出了γ~2估计的几种方法，包括减-d折刀法、减-1折刀法和自助法；
19. Application of Bootstrap and Jackknife in Forest Investigation
    自助法和刀切法在森林调查中的应用
20. 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
21. 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。
22. It is concluded that Pielou ′ s pooled quadrat method and jackknife method are two better methods to solve some of the problems, and jackknife method is more practical in application than the other.
    Pielou的合并样方法和刀切法是两个比较通用的方法，用它们可以解决其中的一些问题。
23. We propose estima tots of the variances and covariances of the asymptotic distribution by the jackknife method and establish their consistency.
    使用刀切法，我们给出了渐近分布的方差与协方差的估计量并建立了它们的一致性。
24. 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
25. Meanwhile, amino acid composition is em-ployed to represent the protein sequence. Experimental results show that our method can achieve better performance in the self-consistency test, the jackknife test and the independent data set test. 2.
    采用氨基酸组成成分分析表示蛋白质序列，在自相容验证、留一法验证和独立测试集验证等三种实验模型上都取得了良好的效果。
26. 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。
27. 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。

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