查询词典 hand ax

"About 700,000 years ago, the first rough hand ax appeared; it was later refined and used with other tools in the Acheulean industry."

"大约700，000年前，第一支粗糙的手斧出现，后来在阿舍尔文化期工艺时期加以改进并与其它工具一起使用。"

Earlier work hinted that improvements in tool technology around 1.4 million years ago—namely, the advent of the Acheulean hand ax—allowed hominids to leave Africa.

先前的研究结论给人的印象是，大约140万年前，制作工具的技术改进了，人类因而能够离开非洲。

They'll need a tool more powerful yet than their new hand ax.

他们将需要比手斧更加有力的工具

That the hand ax can slice the toughest hide...

手斧可以撕开最坚硬的皮革。。。

Its representation stone hand ax, is a hand-ax culture systems.

其代表性石器是手斧，属手斧文化系统。

Better-crafted implements replaced the hand ax of earlier times.

精工细刻的工具取代了早些时候的手斧

Although I where China's "World of Warcraft" server is still operating with tbc version, but I already know the network news, in a later version of tbc, thief has to use a single hand ax, the right thief, who is a big good news.

虽然我所在的中国《魔兽世界》服务器还在运营着tbc版本，但是我在网络新闻中早已经了解，在tbc后的某个版本中，盗贼已经可以使用单手斧，这个对盗贼来说是个天大的好消息。

And carved by the hand ax

用木头和手斧刻出来

The hand ax, one that'll rival the saber-tooth's canines.

手斧，一个对抗剑齿虎的利器

Missirlis in article [1]. At the same time, a sufficient condition for convergence of the PSD method is given to be compared when the coefficient matrix A of the linear system Ax = b is a symmetric, positively defective matrix. In §3.2, an example is given to state that the range of our sufficient condition is wider than theorem 3.3 of article [1]. On the other hand, following a.n analogous approach of [14] and starting the functional relationshipwe have a perfect analysis for the PSD method to converge and optimum valves for the involved parameters under different conditions.Under the assumptions that A is a consistent ordered matrix with nonvanishing diagonal elements and the eigenvalues of the Jacobi matrix of A are real,we get necessary and sufficient conditions for the PSD method to convergence.The result is equal to theorem 1 of article [9].Under the same condition, we can see the optimal parameter and of corresponding spectral radius of thePSD method in [8]:(2)When A is a consistent ordered matrix with nonvanishing diagonal elements and the eigenvalues of the Jacobi matrix of A are imaginary or zero,we get necessary and sufficient conditions for the PSD method to convergence.In chapter 3, the optimal parameter and of corresponding spectral radius of the PSD method are given by table 3.3. Moreover, under the assumption 0

Missirlis在文献[1]中定理3.3的不准确，同时给出了当线性方程组Ax=b的系数矩阵A为对称正定阵时，PSD迭代法收敛的一个充分条件与之比较，并且在§2.3中用实例说明了对于一部分矩阵而言本文得到的充分条件广于[1]中定理3.3的充分条件；另一方面，按照文献[14]的方法，我们从PSD迭代法的特征值λ与其Jacobi迭代矩阵B的特征值μ的关系式：出发，在不同条件下对PSD迭代法的收敛性和最优参数以及最优谱半径进行了完整的分析：(1)在系数矩阵A为(1，1)相容次序矩阵且对角元全不为零，其Jacobi迭代矩阵B的特征值全为实数的条件下，给出了PSD迭代法收敛的充分必要条件，此结果与[9]中的定理1等价，此时最优参数及最优谱半径由[8]得：(2)第三章表3.3中给出了，当系数矩阵A为(1，1)相容次序矩阵且对角元全不为零，其Jacobi迭代矩阵B的特征值全为纯虚数或零时的PSD迭代法的收敛范围和最优参数，并且我们可以得到当0

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。