In order to solve the problem of low efficiency and short service life of hot pressed diamond bit when drilling in hard and compact formation, relations between diamond exposure of hot pressed bit and rock abrasiveness were analyzed in this paper. Research on matrix performances of hot-pressed diamond bit was firstly carried out.

針對在硬而致密巖石中鉆進(jìn)時效低的難題欧美在线免费不卡视频，本文分析了碳化鎢基熱壓鉆頭的金剛石出刃與巖石研磨性等巖性之間的內(nèi)在聯(lián)系中文字幕在线免费观看网址，認(rèn)為鉆頭的胎體成分及其性能是關(guān)鍵色播播影院,噜噜噜噜私人影院，硬而帶脆性的胎體性能有利于全剛石出刃黄色国产一级片浪潮骚货，從而能提高鉆進(jìn)速度。

He is the Chairman of Board and President of Beijing Jinfangzi Diamond Co, Ltd, the Vice Director of the Gemmological Association of China, the Vice Chairman of the Bijouterie Professional Committee, the Diamond Grade Appraiser of Beljian Diamond HRD, the Director of the Wealth Jewelry Weekly.

現(xiàn)任北京金房子鉆石有限公司董事長兼總經(jīng)理国产激情自拍、中國寶玉石協(xié)會副會長日韩妓女精品影院视频在线、中國珠寶首飾專業(yè)委員會副主席欧美少妇熟女性爱视频、比利時鉆石高階層議會鉆石分級鑒定師、《財富珠寶》周刊理事長玖玖色综合加勒比在线视频免费精品。

Visit the Diamond Education Center and learn about diamond cut and color , diamond certification , and more.

參觀鉆石教育中心美女高潮黄又色高清视频，了解鉆石切割和顏色，鉆石認(rèn)證欧美大片在线视观看喷水，等等。

Our products mainly include resin bond diamond grinding wheel, metal bond diamond grinding wheel, adamantine drill, geological drill as well as other diamond products made upon the demands of the customers.

主要產(chǎn)品有：樹脂結(jié)合劑金剛石砂輪被cao的美女、金屬結(jié)合劑金剛石砂輪97午夜、金剛石工程鉆頭、地質(zhì)鉆頭及根據(jù)客戶所需求的各種金剛石制品等最新3D动漫H福利在线观看。

The wetting mechanism of metal alloy containing strong carbide-forming elements to diamond surface and the technique of diamond surface metallization are fundamental to the manufacture of single-layer brazing diamond tools.

含強(qiáng)碳化物形成元素合金對金剛石表面浸潤的機(jī)理與金剛石表面金屬化技術(shù)是釬焊制造單層金剛石工具的技術(shù)基礎(chǔ)亚洲精品欧洲区二。

This paper studies depression in the hot cathode glow discharge PCVD method of diamond films influence in the process, mainly from two aspects of research: a study of the process of discharge pressure of the impact of that pressure on the technology, the impact of state discharge , as well as pressure and discharge voltage of the relationship between the two, and experiment with different pressure, relative to the preparation of samples, and using Raman instrument and SEM analysis of the quality of the film, by comparing the different types of gas pressure on the quality of diamond films, summed up the most good gas pressure parameters of a high-quality diamond films.

本文研究氣壓在熱陰極輝光放電PCVD方法制備金剛石膜過程中的影響，主要是從兩個方面進(jìn)行研究：一久99久精品免费视频12，研究制備過程中氣壓對放電的影響五月天激情网亚洲区，得出氣壓對工藝，放電狀態(tài)的影響玖玖玖玖色在线观看播放，以及氣壓和放電電壓的關(guān)系亚洲欧美中文日韩激情；二，采用不同氣壓進(jìn)行實驗αⅴ插插，制備出相對應(yīng)的樣品日本美女免费黄色网站，并用Raman和SEM等儀器對膜進(jìn)行質(zhì)量分析，通過對比不同氣體壓強(qiáng)對金剛石膜質(zhì)量的影響夜晚av网站，總結(jié)最佳氣體壓強(qiáng)參數(shù)国产下药迷在线视频，制備出高品質(zhì)金剛石膜。

Are some of our best selling products.We are amongst the very few who export Platinum Diamond Jewelry, Yellow Gold Diamond Jewellery, White Gold Diamond Jewelry 18 kart, 14 kart, 10 kart and 9 kart.

我們是極少數(shù)人的其中出口白金鉆石首飾金黃色鉆石珠寶白金鉆石首飾(1814kartkart珍寶kart和9kart)不卡免费黄色小视频。

Our company mainly produces with the sales rough diamond tool (Jin'gang pen, grinding wheel knife, four angular cutters) the diamond ultra hard wear-resisting component:Diamond bearing support diamond cutting tool and so on.

我公司主要生產(chǎn)和銷售天然金剛石工具金剛筆男女八x八x视频网站、砂輪刀、四角刀）金剛石超硬耐磨器件：金剛石軸承支撐金剛石刀具等无码AV一区二区大桥久未。

Though it may be of lesser value than the white diamond, enabling you to purchase a higher carat black diamond, the warmth and beauty of a black diamond ring can surpass a white diamond ring.

雖然它可能是價值較低的比白色的鉆石看黄免费看，讓您購買更高克拉的黑色鉆石，溫暖和美麗的黑色鉆石戒指可以超越白色鉆石戒指欧美精品一区。

Results of experimental research on diamond surface metallization with electrolyse plating and vacuum plating show that strength, thermal stability and penetration rate of metallized diamond are much better than that of nonmetallilized diamond, and performances of diamond plated with Ti are the best among all plated diamonds.

利用化學(xué)鍍和真空鍍 2種方法對金剛石表面進(jìn)行金屬化處理的試驗研究結(jié)果表明操操综合，鍍膜金剛石較未鍍膜金剛石的抗壓強(qiáng)度、熱穩(wěn)定性等性能和碎巖效果均有很大提高超碰精品在线观看，其中真空鍍Ti的效果最好人人妻人人操97。