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PCFK series of pairs of counter-reversible hammer crusher is a new crushing equipment, mainly by knock-on effects to broken materials, broken process in general is this: the material falling into the break in the world, imported high-speed rotation of the hammer impact face was against the entrance of the adjustable crusher tooth wear plate, for the first time broken, broken after the particles basically the same material evenly into the main break, the secondary primary crushing, crushing in the main chamber has been uniformly The material was re-kinetic energy particles from the hammer, high-speed rushed back inside the jagged cavity lining was broken, due to the special lining sawtooth-shaped structure.

PCFK系列可逆双反击锤式破碎机是一种新型破碎设备,主要是靠冲击作用来破碎物料的,破碎过程大体是这样的:落下的物料进入破世界进口后,遇到高速旋转的锤头冲击而被打击到破碎机进口处的可调耐磨齿板上,进行首次破碎,破碎后颗粒基本相同的物料均匀的进入主破碎内,进行二次主破碎,在主破碎腔内已被均匀的物料颗粒从锤头再次获得动能,高速冲向反击腔内部的锯齿形衬板而被破碎,由于衬板特殊的锯齿形结构。

This dissertation investigates the construction of pseudo-random sequences (pseudo-random numbers) from elliptic curves and mainly analyzes their cryptographic properties by using exponential sums over rational points along elliptic curves. The main results are as follows:(1) The uniform distribution of the elliptic curve linear congruential generator is discussed and the lower bound of its nonlinear complexity is given.(2) Two large families of binary sequences are constructed from elliptic curves. The well distribution measure and the correlation measure of order k of the resulting sequences are studied. The results indicate that they are "good" binary sequences which give a positive answer to a conjecture proposed by Goubin et al.(3) A kind of binary sequences from an elliptic curve and its twisted curves over a prime field F_p. The length of the sequences is 4p. The "1" and "0" occur almost the same times. The linear complexity is at least one-fourth the period.(4) The exponential sums over rational points along elliptic curves over ring Z_ are estimated and are used to estimate the well distribution measure and the correlation measure of order k of a family of binary sequences from elliptic curves over ring Z_.(5) The correlation of the elliptic curve power number generator is given. It is proved that the sequences produced by the elliptic curve quadratic generator are asymptotically uniformly distributed.(6) The uniform distribution of the elliptic curve subset sum generator is considered.(7) We apply the linear feedback shift register over elliptic curves to produce sequences with long periods. The distribution and the linear complexity of the resulting sequences are also considered.

本文研究利用椭圆曲线构造的伪随机序列,主要利用有限域上椭圆曲线有理点群的指数和估计讨论椭圆曲线序列的密码性质——分布、相关性、线性复杂度等,得到如下主要结果:(1)系统讨论椭圆曲线-线性同余序列的一致分布性质,即该类序列是渐近一致分布的,并给出了它的非线性复杂度下界;(2)讨论两类由椭圆曲线构造的二元序列的"良性"分布与高阶相关性(correlation of order κ),这两类序列具有"优"的密码性质,也正面回答了Goubin等提出的公开问题;(3)利用椭圆曲线及其挠曲线构造一类二元序列,其周期为4p(其中椭圆曲线定义在有限域F_p上),0-1分布基本平衡,线性复杂度至少为周期的四分之一;(4)讨论了剩余类环Z_上的椭圆曲线的有理点的分布估计,并用于分析一类由剩余类环Z_上椭圆曲线构造的二元序列的伪随机性;(5)讨论椭圆曲线-幂生成器序列的相关性及椭圆曲线-二次生成器序列的一致分布;(6)讨论椭圆曲线-子集和序列的一致分布;(7)讨论椭圆曲线上的线性反馈移位寄存器序列的分布,线性复杂度等性质。

XRD, EDS and TEM investigation disclosed that amorphous ferric oxide was uniformly dispersed on the surface of carbon black.

XRD、EDS、和TEM分析证明,铁/炭黑复合材料中无定形氧化铁在炭黑表面的含量可达40%,且分散均匀。

However, during its short life, the AKC conformation judges who were invited to judge the Field of Champions were uniformly very impressed with the high quality of the dogs entered.

不过此项赛事的短暂寿命还是让受邀担任评审工作的审查员见识到了参加比赛犬只的高品质。

In an uniform field, the lines of force are straight parallel, and uniformly spaced.

在匀强电场中,电力线是平行的直线,其间隔是均匀的。

The middle of each finger-shaped grass-poking wheel is provided with a round disk whose circumference is distributed with a plurality of finger-shaped teeth uniformly.

指形拨草轮中间为圆盘区,沿着圆盘的圆周均匀地分布着多个(10~12个)手指形轮齿。

Having flagella uniformly distributed over the body surface, as certain bacteria.

有周毛的身体周围有鞭毛的,如某些细菌

On the contrary, beds of large uniformly sized solids often fluidize poorly with bumping, spouting and slugging

相反,均匀大颗粒床层常常由于碰撞、喷射和腾涌而流化不好。

Pomarine is typically almost uniformly dark above and it is difficult to see any contrast between the dark brown forewing and the black secondaries.

中贼鸥典型地背面是均匀的暗色,而且难以看出暗棕色前翼和黑色次级飞羽之间的任何对比。

Non-uniformly sampled, spectrum estimation, fourier transform, sine signals

非均匀采样;频谱分析;傅立叶变换;正弦信号

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Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车,和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特,那个是爱朗。

Articulate the aims, objectives and key aspects of a strategic business plan.

明确的宗旨,目标和重点战略业务计划。