锤头

The running conditions the main body of a book is complied with analysing the dyadic crusher of hammer hammerhead and cleading has started off,has expounded and proven the rationality adopt high chromium cast iron able to endure.

从分析锤式破碎机锤头和衬板的工作条件出发，论证了采用高铬耐磨铸铁的合理性；介绍了锤头和衬板化学成分的选择。

It has good abrasion resistance and it's a new experiment for enhancing abrasion resistance of the crusher hammer.

磨损试验证明锤头具有良好的耐磨性，是提高破碎机锤头耐磨性的一种新尝试。

It is important to rational design the drop hammer.

为减小落锤的蘑菇形尺寸，降低锤头的材料成本，多次重复使用落锤，进行合理的落锤结构设计指明了方向。

A third time he approached in the same manner, when the Christian knight, desirous to terminate this elusory warfare, in which he might at length have been worn out by the activity of his foeman, suddenly seized the mace which hung at his saddlebow, and, with a strong hand and unerring aim, hurled it against the head of the Emir, for such and not less his enemy appeared.

第三次他又猛扑，这时基督教骑士不愿老让敌人用这种方式消耗白己力量，决定结束这种虚晃一着的战斗，突然拿起放在马鞍前穹上的钉头锤狠命地一扔，锤头准确地直指这个酋长的头部(看起来这个敌人的身份不会低于酋长)。

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。

The calculation equation of impact reverse force vector is obtained when the existence of departure between strike place of hammer of crusher and impact center based on the theory of mechanics.

应用理论力学的碰撞理论，求证了锤式破碎机锤头对矿石的打击偏离碰撞中心时，在锤头销孔处产生的碰撞反力的大小和方向，给出了计算公式。

The effects of hammerhead style, rotation speed, and inlet water volume on particle size distribution were investigated.

探讨了破碎机理，分析了破碎机锤头类型、锤头转速和进水流量对破碎产物粒度分布的影响。

Computer was used to analyze the possible secondary cleavage sites on HPV11 E2 mRNA and to predict the secondary structures of substrate and ribozymes. According to the theory of Symons headhammer ribozyme, there are 32 sites to targetting sequences.

遵循Symons锤头状核酶结构和GUX剪切位点原则，靶序列存在32个剪切位点，通过计算机软件分析核酶的最佳剪切位点，并对底物及核酶的二级结构进行预测及进行相应基因生物学功能和基因同源性分析，筛选出2个锤头结构核酶。

It is necessity to take an impact test for FOPS in laboratory in order to install falling object protective structures at engineering vehicle and check its dependability.

为了对工程车辆的落物保护装置进行可靠性试验提供理论依据，采用冲击动力学的塑性波两侧的动量平衡理论对工程车辆FOPS受冲击时落锤的动态响应进行了研究，建立了锤头变形的基本方程，绘制了方程相应曲线；建立了锤头在冲击过程中任一瞬时变形长度和非变形长度的数学模型，找到了工程应变和冲击速度之间的曲线对于塑性大变形的突变点及影响落锤变形的各个因素和控制变形的依据。

The genes of hammerhead ribozymes targeted against two and three sites on negative strand of potato spindle tuber viroid were designed, synthesized and cloned according to the action manner of hammerhead ribozyme.

根据锤头型核酶的作用模式，设计、合成并克隆了特异切割马铃薯纺锤形块茎类病毒负链RNA不同区域位点的双价和三价锤头型核酶基因。

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。