六角的

A new hexagonal approximant has been found in Al-Cr-Si alloys and its axial lattice parameter follows a τ''s power series τ=(1 √5/2 is the golden number relationship, implying that they are all decagonal approximants. A rule of the icosahedral chains in them has been found.

在Al-Cr-Si合金中发现一种新的六角近似相，它与几个结构已知的六角相的晶格常量呈黄金数τ=(1 √5/2的幂级数关系，说明它们都是十重准晶的近似相，并找出其中二十面体链的规律。

Hexagonal bolts are usually formed with cold heading. The process is classified as open-die forging and therefore its die design is less complicated. The mushroom-like head has to be sheared into hexagonal shape and the amount of the scrap is somehow significant especially for heading with short bolts or high alloy material. There is an increasing demand in increasing the gross profit by increasing the yield of workpiece material.

六角螺栓头端通常以冷间顶铁成形製程来製造，由於冷间顶铁属於开模锻造，模具设计较容易，但需以剪缘模再对蕈状头端冲剪成为六角头，此剪缘后的废料量不容忽视，尤其对於长度较小的螺栓，或其它应用於紧扣件的高级合金而言，藉由减少废料以提高產品毛利的需求日益迫切。

Correct, the demolition of the gas valve is the gas valve from the spare machine work location, the body upperend in the jaws of a pair of pliers-bed of one side, the seat of the valve body with M8X 25 hexalobular heicobacter of hexalobular head alignment valve set's center position, hupensis the other side of the top in the jaw, to increase the contact area on the screw to prevent bursting valve set, at the same time makes it easy to remove.

气阀正确的，拆卸方法是，把气阀从机器工作位置拆下来，将阀体的一头放在钳台的钳口一边，阀体的阀座边用M8X 25内六角螺杆的内六角头对准阀套的中间位置，螺的另一边顶在钳口上，目的是增加螺杆的接触面积，防止顶破阀套，同时便于取出卡簧。

Correct, the demolition of the gas valve is the gas valve from the spare machine work location, the body upperend in the jaws of a pair of pliers-bed of one side, the seat of the valve body with M8X25 hexalobular rationl hexalobular head alignment of valve set's center position, hupensis the other side of the top in the jaw, to increase the contact area on the screw to prevent bursting valve set, at the same time makes it easy to remove.

气阀正确的，拆卸方法是，把气阀从机器工作位置拆下来，将阀体的一头放在钳台的钳口一边，阀体的阀座边用M8X25内六角螺杆的内六角头对准阀套的中间位置，螺的另一边顶在钳口上，目的是增加螺杆的接触面积，防止顶破阀套，同时便于取出卡簧。

In this dissertation, we optimized the thinkness of each layer of TFEL devices using the layered optimization method to obtain ZnS: Ce〓 TFEL devices. Accoding to the energy level structure of Ce〓, two criteria for distinguishing the EL of Ce〓 were found out, from which it was conduded that the TFEL of ZnS: Ce〓 comes from 5d→4f transition of Ce〓. The measurement of brightness waveform showed that the TFEL of ZnS: Ce〓 was the luminescence from independent centers. and there were the field induced-delocalization in this process anf it〓s the cause of low TFEL efficiency of ZnS: Ce〓. In this dissertation, different influence factors on TFEL of ZnS: Ce〓 were sdudied. The influence of different host lattice is different: The blue/green ratio of ZnS: Ce〓 in hexagonal system of ZnS is larger than that in cubic system of ZnS, and the TFEL peaks in hexagonal system of ZnS moves toward longer wavelength compared with that in cubic system of ZnS. The adding buffer layer was used in this stage. The solubility of Ce〓 in ZnS was small and it was another limit to TFEL brightness of ZnS: Ce〓 device. The solubility of Ce〓 increased ten times when using Li ions as flux, so that the TFEL brightness of ZnS: Ce〓 was enhanced. It was found that the appearing of ZnO in active layer improves the TFEL of ZnS: Ce〓: the brightness and the wave range of ZnS: Ce〓TFEL were enhanced.

本文采用TFEL的分层优化方案，优化组合了各膜层厚度，选择最佳制备条件，得到了ZnS：Ce〓的TFEL；根据Ce〓的能级结构，找到了判别Ce〓的EL的两个简单依据，并据此断定ZnS：Ce〓的TFEL的两个发射峰分别属于Ce〓的〓和〓跃迁；亮度波形测量表明ZnS：Ce〓的TFEL属于分立中心发光，分析认为在此过程中存在着较严重的场致离化，这也是ZnS：Ce〓的TFEL效率较低的一个原因；本文考查了影响ZnS：Ce〓的TFEL的各种因素，发现：基质的晶体结构对ZnS：Ce〓的TFEL有所影响，在六角相ZnS中Ce〓的TFEL优于立方相ZnS中Ce〓的TFEL：发射峰的蓝-绿比相对较大，且光谱向短波方向移动，在此项研究中本文采用了在发光层前增镀过渡层的办法，过渡层为六角晶相的ZnO；限制ZnS：Ce〓的TFEL器件亮度的一个原因是Ce〓在ZnS中的溶解度低，本文用Li离子作助溶剂增大了Ce〓的溶解度，增大幅度为一个量级，并且ZnS：Ce〓的TFEL亮度明显提高；从ZnS：Ce〓的TFEL光谱来看ZnS：Ce〓的TFEL波长覆盖范围较小，亮度也不高，达不到做为白色TFEL材料的要求，需要寻找新的白色TFEL材料；在研究ZnS：Ce〓的TFEL中还发现：发光层中ZnO的出现有利于ZnS：Ce〓的TFEL：发射峰变宽、亮度增大。

There will be many astigmatism veins in the process of expiating new motor lamps using Reverse Engineering such as side astigmatism veins pole astigmatism veins triangle astigmatism veins, yuyan astigmatism veins pyramid astigmatism veins four-corner astigmatism veins six-corner fake astigmatism veins six-corner changed stigmatism veins and etc.

利用逆向工程技术进行汽车车灯新产品的开发过程中经常遇到各种各样的配光纹，常见的有侧配光纹、柱状配光纹、三角形配光纹、鱼眼配光纹、金字塔配光纹、四角电铸纹、六角伪电铸纹和六角变形电铸纹等。

The most common form of lathe is the turret lathe it consists of a horizontal bed supporting the headstock, the carriage and the turret.

最常见的车床形式是以图解方式显示的六角车床，它由一个支承床头箱、拖板和六角刀架的水平床身组成。

The main components of the lathe are the headstock and tailstock at the oppoaite ends of a bed,and a tool-post between them which holds the cutting tool.the tool-post stands on a cross-side which enblesit to move sidewards across the saddle or carriage as well as along it,depending on the kind of job it is doing.the ordinary centre lathe can accommodat only one tool at at time on tool-post,but a turret lathe is capable of holding five or more tools on the revolving tueeet.

刀架位于一个纵面板上，小拖板使刀架能够根据加工操作的不同作纵向移动；同时又随大拖板作横向移动。普通顶尖车床只能在刀架上夹持一件刃具，但六角车床可以在其旋转的六角刀架上夹持五件或更多的刃具。车床的床身必须很牢固结实以避免在受力的时候弯曲和变形。请提问的同学最好参观一下工厂的金属切削/机加工车间。那里有车床，还有其他种类的金属切削机床。

In possession of 20-year,s special productionand managerial experience,linking with the most advanced manufacturing engineering both at home and aboard,in the tenet of "uality First,Credit Highest"striving for innovation,and taking advantage of equipments and materials with high specification,high quality inJupan and Taiwan,etc.the orporation provide you high strength stainless steelmachine bolt,self tapping screw,trigonodont crew,setscrews of M2-M12 single-line slot,cross slot,inside and outside angle,pan head,conmbined screw,stainless steelspacer and special nut,such as stainlesssquare nut,hexagon nut,weld nut,welding yandage,folan screw nut,with annual output coming out in front of fellow industry.

公司拥有20年的专业生产及管理经验，融汇国内外最先进的制造工艺，力求创新，本着&质量第一，信誉至上&的宗旨，应用日本、台湾等高标准、高质量的设备及材料，为客户提供高强度M2～M12一字槽、十字槽、内外六角、盘头、沉头、尖头、平头等形状的不锈钢机械螺丝、自攻螺丝、三角牙螺丝、紧定螺丝；铝钉；全不锈钢铆钉、尾孔钉、子母钉；不锈钢垫片及不锈钢方母、六角螺母、焊接螺母、焊码、佛兰螺母等异形螺母，年产量名列同行业前茅。

In order to increase the rolling capability of three-high cogging mill,the forging plant of Laigang reforms the traditional cogging process,joining the six angle-square pass with box pass well and designing the six angle pass with heavy elongation to realize conjugate rolling,thus realizing the heavy reduction,heavy elongation for cogging rolling and single end product outing and self nip,improving the rolling rhythm.

为提高三辊开坯轧机的轧制能力，莱钢锻压厂对传统的开坯工艺进行改造，将六角—方孔型与箱形孔良好衔接，并设计了能够共轭轧制的大延伸六角孔，从而实现了开坯轧制大压下、大延伸，以及成品单出与自动咬入，提高了轧制节奏。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。