金刚石

It now processes solid technical strength and advanced technological equipment, specializing in producing diamond tools :metallic bonding agent, resin bonding agent and rubber bonding agent, Various diamond grinders,core drilling machine, grinding head for fine engraving ,various special polishing wheels (The tool of special use sole diamond wheel), diamond drilling bit,diamond fingers-trimmer,and all kinds of glass special use polish wheel have been the optimum assorter for the glass deep-processing machine and sole proceessing machine.

现拥有 雄厚的技术力量和先进的工艺设备。专业生产：金属结合剂、树脂结合剂、橡胶结合剂系列金刚石工具，如各式金刚石砂轮，金刚石钻头，精雕磨头，金刚石修指器，各式玻璃专用抛光轮等工具。

It now processes solid technical strength and advanced technological equipment,specializing in producing diamond tools :metallic bonding agent,resin bonding agent and rubber bonding agent,Various diamond grinders,core drilling machine,grinding head for fine engraving ,various special polishing wheels(The tool of special use sole diamond wheel), diamond drilling bit,diamond finger-trimmer,and all kinds of glass special use polish wheel have been the optimum assorter for the glass deep-processing machine and sole proceessing machine.

现拥有雄厚的技术力量和先进的工艺设备，专业生产：金属结合剂、树脂结合剂、橡胶结合剂系列金刚石工具，如各式金刚石砂轮，金刚石钻头，精雕磨头，金刚石修指器，各式玻璃专用抛光轮等工具。

Electrons can be easily injected from thegraphitic matrix into the conduction rand of diamond under the high field which resultedfrom the projection field enhancemext.These injected electrons could reach the vacuumsurface and then emit into vacuum where the negative electron affinity or low electronaffinity could allow the electrons to re emitted more easily.

由于场增强效应，对镶嵌在非晶碳颗粒表面的金刚石晶粒来说，电子在高场作用下通过隧道效应越过金刚石晶粒与非晶碳形成的界面势垒，注入金刚石的导带，在电场的作用下迁移到表面，由于某些金刚石表面具有负电子亲和势或较小的正电子亲和势，电子较易发射进入真空。

This paper summarizes the latest developments in this aspect which includes the oxygen fugacity in the upper mantle and its measuring methods, and the carbon source of diamond, the new genetic model of diamond, and its preservation.

本文收集总结了国内外在这方面研究的最新成果，包括上地幔的氧逸度及其测定方法，形成金刚石的碳的来源、金刚石形成时的流体状态、金刚石的最新成因模式、氧逸度与金刚石的保存等等。

Additionally, there was new AES that may be a transition form of hybridism of carbon atom. It is concluded that carbon atom of graphite changes from sp^2 π to sp^3 through "metal catalyst layer", and deposits on the surface of diamond.

结果表明高温高压条件下石墨中碳原子经过"金属催化剂层"才能将碳原子的电子构形从SP^2π态改变成SP^3态，碳原子从而以金刚石四面体结构沉积到金刚石表面，金刚石晶格结构的形成是在金刚石表面层完成的。

Natural diamonds often exist in the Kimberlite pipes of the mantle, where often contain the inorganic elements--- sulfur. So the inclusions of natural diamonds are always carbonate minerals and sulfide. Undoubtedly, the study of the additive sulfur action in the course of synthesizing diamond will further our understanding the reason of natural germ formation.

天然金刚石多产生于地壳中的金伯利岩和钾镁煌斑岩，该岩层中含有非金属元素硫，天然金刚石中的包裹体通常为硅酸盐矿物和硫化物[41]，因此研究添加剂硫在合成金刚石中的影响是认识天然金刚石成因的重要方面。

In china, diamond used in the products such as diamond bits and diamond saws are more than 60%.

由于金刚石钻头和金刚石锯片所用金刚石占我国金刚石产量的60％以上。

Heat flows derived from garnet, chromite/chromium-spinel and pyroxene of xenoliths, xenocrysts in Mengyin and Fuxian kimberlites are higher than 40mW/m〓 calculated from the pyroxene inclusions in diamonds, and the range of pressure is 20～40kb (equivalent to 65～130km). Metasomatism (as indicated by yimengite and lindsleyite in Mengyin) is very strong in this depth range. Lherzolite, wehrlite, and diamond-free high-Ca harzburigite around the world are derived from this depth also. The observation suggests that the low-Ca harzburigitic environment for diamond stability had been changed significantly when the kimberlitic magmas erupted. This resulted from fluid interaction with harzburigite. The geotherm of the Cenozoic lithospheric mantle beneath Eastern-North China platform is higher than oceanic one. The temperature from the interior of the Tan-Lu faults is higher than that from apart off the fault.

除金刚石中的辉石温压投点落于40m W/m〓占地温线上外，捕虏体及捕虏晶中石榴石，铬尖晶石及单斜辉石的投点均偏离该地温线，显示较高的地温特点，而且捕虏体及捕虏晶的压力范围多在20-40kb(相当于65-130km)间，该深度范围内地幔的交代作用特别发育，如蒙阴大量发育的沂蒙矿、钛钾铬石等就发育于该深度范围，世界范围内不含金刚石的高钙方辉橄榄岩、二辉橄榄岩、异剥橄榄岩也分布于该区中，一方面表明捕虏体的主要取样位置已不在金刚石稳定区中，另一方面也表明金刚石稳定的橄榄岩环境，在金伯利岩侵位并捕虏他们时已发现了明显的改造，这种改造作用主要是通过长期的熔流体与先存的橄榄岩相互作用的结果。

Due to the action of boron, the diamond has rough grain size, bad crystal shape and complex surface structure.

提出了一种在高温高压下利用粉末冶金方法制备的Fe-Ni-C-B系触媒合金生长Ⅱb型金刚石的新方法由于硼元素的存在，Ⅱb型金刚石生长所需的温度和压力条件均高于普通的Ⅰb型金刚石，并且合成出的金刚石单晶粒度较粗，晶形稍差，表面结构比较复杂。

The author firstly dissertates the technology based on diamond tool grinding, and deep anatomises the mechanism of diamond tools edge grinding, the designing and manufacturing technology of diamond tool, also the measuring technology of diamond tool grinding quality. In this paper, the author has compactly summarized the properties of many famous diamond tools cutting edge grinding machine tools in the world.

从金刚石刀具刃磨技术基础出发，深入剖析了金刚石刀具的刃磨机理、金刚石刀具的设计及制造技术，并对金刚石刀具的刃磨质量检测技术做了深入了解，总结了国内外目前刃磨设备的特点，为开展具有创新性的金刚石刀具刃磨技术与设备研究做好了充分而必要的技术准备。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。