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Class has not slunk1 away from these islands. It never will. Too many people have an investment in it. But most would no......
The story of Susan Boyle—like that of Paul Potts before her—is, except to the most jaded and curmudgeonly among us, co......
W hen video circulated earlier of a man being dragged from a United Airlines flight after refusing to give up his seat t......
IN 2012, Chinese artist Chen Yanrong was invited to teach paper cutting in Mauritius and Seychelles. over the course of ......
1 North Carolina北卡罗来 It’s against the Iaw tosing off-key. 唱歌走音是非法的。 2 Arizona亚利桑那 Cuttin......
Error modelling and compensating technology is an effective method to improve the processing precision.The position and ......
目的探讨长期、严重、广泛虹膜后粘连情况下瞳孔闭锁、瞳孔膜闭的瞳孔成形术。方法采用高频电子撕囊仪对瞳孔缘或部分虹膜实施环形......
目的 探讨治疗慢性肥厚性鼻炎的手术方法和疗效.方法 回顾性分析135例患有慢性肥厚性鼻炎的病例资料,采用局麻鼻内镜下下鼻甲黏膜......
In high-speed cutting, natural thermocouple, artificial thermocouple and infrared radiation temperature measurement are ......
Do you like putting on an apron and making a delicious snack for your family？ How about helping out at the stove， smelling......
Rare earth ceramic cutting tool and its cutting behavior when machining hardened steel and cast iron
The addition of rare earth element yttrium played an important role in the improvement of both mechanical properties and......
The secondary dendritic arm spacing(SDAS)of free cutting steel 38MnVS during continuous casting process was simulated ba......
Discourse and pragmatics are very important factors in ELT and they are very useful to effective language teaching and l......
随着精密与超精密加工技术的不断发展和成熟,将振动辅助切削技术应用到精密与超精密加工中去已成为发展的一个必然趋势。结合国内......
The Heavenly Stems and the Earthly Branches， used to indicate the sequence of years in the traditional Chinese calendar， h......
Nanjing-style paper cutting is an important genre of Chinese paper cutting. It is known for its diverse designs, simplis......
Nanjing-style paper cutting is an important genre of Chinese paper cutting. It is known for its diverse designs, simplis......
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目的 评价Oculyzer眼前段分析系统引导的个体化准分子激光原位角膜磨镶术(LASIK)矫正准分子激光偏中心切削的临床效果.方法 回顾性......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
海底油气管道在维修过程中可以采用水下金刚石绳锯机割断.介绍水下绳锯机的基本组成,对绳锯机切割管道过程中的切割可靠性进行了理......
A novel,simple,and effective one-step method has been developed to cut the conventional long and entangled multi-walled ......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
Use of 1.32-μm and 1.06-μm wavelength lasers for vascular cutting in a porcine model of liver and st
Objective The aim of this study was to analyze and evaluate 1.32-μm and 1.06-μm neodymium-doped yttrium aluminum garne......
【摘 要】摩擦式自锁装夹切削，是一种针对壁厚较薄，而孔径较大的锥形孔件能获得外观光洁，无接刀痕迹，内外径同轴度高，工件无变形无夹伤，......
腭裂手术治疗在解剖处理腭裂肌肉时,采用cutting腭裂肌肉整复解剖技术,修复腭裂61例,获得了充分减张,充分重建腭咽部肌肉吊环,术后......
MoS2/Ti composite coatings (MoSTM), have been deposited by a closed-field unbalanced magnetron sputter ion-plating syste......
Applications of Cr-Based Metal Nitride Hard Coatings Using Multi-Magnetron Sputtering Sources and El
Cr-based nitride hard coatings were produced by multi-magnetron sputtering sources using elemental metal materials. Cr, ......
为提高虚拟手术切割的实时性与逼真性,提出一种软体实时任意切割与变形的新算法.采用质点弹簧模型模拟切割时软组织因外力引起的形......
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A new environmental friend cutting brass containing magnesium instead of lead was produced by casting, extruding and dra......
Data from a thermodynamic database and the calculation software FactSage were used to investigate the phase diagrams of ......
[目的]对野生河北木蓝进行繁殖试验,为其大规模的引种驯化提供依据.[方法]设计了扦插、种子萌发2组试验.[结果]在扦插试验中,IBA 5......
[目的]得出北培榕扦插繁殖技术最优的生根处理方式.[方法]研究了激素种类、处理浓度、处理时间、插穗长度以及基质种类对北培榕扦......
对扦插基质、插穗的选择及生根剂处理等影响栝蒌幼苗扦插生根的因素进行了研究。结果表明:采用纯蛭石为基质,选取移栽25~30 d已具......
研究了5个穗醋栗品种采用不同生根剂、不同浓度处理对硬枝扦插效果，以筛选出提高穗醋栗硬枝扦插成活率的适宜方法。结果表明，C1处理（......
Effects of Exogenous Indole Butyric Acid and Callus Formation on the Anti-oxidant Activity, Total Ph
In order to evaluate the effects of exogenous indole butyric acid (IBA) and callus formation on the antioxidant activity......
提出一种实用的通过主轴转速寻优调整对再生型切削颤振进行自动控制的方法.机床主轴前后两转切削颤振信号相位差的最优值为270°,......
[目的]研究椰糠代替草炭作为香石竹种苗扦插基质的可能性.[方法]以珍珠岩、椰糠为主要基质,通过设置不同配比对香石竹‘马斯特’(R......
Relatively to non-traditional and high-energy-beam micro-manufacturing technique, the micro-cutting technology has many ......
以乌饭树当年生嫩枝为材料，对影响插穗生根的枝条部位、叶片面积和激素等因子进行了系统的研究。结果表明：枝条部位对乌饭树插穗生根......
混合使用CuO+Al和Fe_2O_3+Al作为高热剂,按CuO+Al系的质量分数分别为0%、25%、50%、60%、70%、80%、90%、100%配制切割用燃烧型焊......
建立了聚晶金刚石(PDC)钻头切削齿切削岩石过程的有限元模型,模拟了不同形状切削齿不同切削深度下的线性和圆弧切削过程.模拟前确......
回转窑是一种大型圆筒类回转设备,筒体是回转窑的重要组成部件,本文着重论述了回转窑筒体在下料、钢板预处理、筒体拼接、焊缝质量......
为探讨珊瑚藤扦插繁殖的基质、生根剂种类及其浓度最佳配置,以基质[椰糠、泥炭土、椰糠∶泥炭土∶菌渣(V∶V∶V=1∶1∶1)]、生根剂......
银毛野牡丹是优良的园林观赏性植物.通过为期30天的扦插试验,对比不同基质配比对银毛野牡丹插穗生长的影响,分析插穗生根时间、数......
柱帽大板无梁楼盖多起坍塌事故说明柱帽冲切安全是此种楼盖形式的设计关键。目前很多计算软件及设计人员仅考虑冲切净反力作用下的......
对近年来靖江边滩周期性切割发生的位置、切割时的规模和切割体的大小进行梳理分析,并对1966年以来已发生的12次较大规模切割时机......
为提升数控加工技术水平,合理选择切削参数,分析了数控加工中切削参数的影响因素。以某钛合金插铣加工切削参数优化为例,提出了优......
