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[期刊论文] 作者:F.伯莱斯切克, 来源:电力电子 年份:2004
当旋转磁场电机用作拖动电动机时,转矩的产生和控制就需要得到特殊的考虑。举例来说,就是用定子电压矢量,还是用定子电流矢量来表示产生转矩的变量,取决于给电动机供电的静止变换......
[期刊论文] 作者:Munder,F. Fürll,Ch. Hempe, 来源:中国纺织经济 年份:2004
Flax, linseed or hemp fibres can substitute wood, synthetic, carbon and glass fibres in a wide range of industnal products.A complete new machine line for the p...
[期刊论文] 作者:F. Tsai,I.C. Tsai,W.C. Shieh, 来源:干旱区资源与环境 年份:2004
[期刊论文] 作者:Girod,F. Tamoue,R. Haug, 来源:国际纺织导报 年份:2004
无线射频识别(RFID)作为条形码的替代,正越来越多地应用于产业中.例如,钥匙、图书馆中的图书和缆车通行证等都可安置RFID转调器.同样,在服装领域,通过无线电信号区分商品的应...
[期刊论文] 作者:Monir-vaghefi,F. Ashrafizadeh, 来源:材料热处理学报 年份:2004
In the present reserch, a model has been proposed for estimate fracture toughness of Nickel-phosphorus (EN) layers. For this purpose, high phosphorus (9%) EN co...
[期刊论文] 作者:Riegert,F. Sista, 来源:眼视光学杂志 年份:2004
目的:阐明多焦视诱发电位成分是如何从多通道双极记录中得出和进行地形学分析的.并研究不同的视皮层记录位置对多焦视诱发电位的波形、潜伏期(ms)和振幅(mV)的影响.方法:采用...
[期刊论文] 作者:Gustavo F. Gonzales,Ana Ruiz,C, 来源:亚洲男性学杂志 年份:2004
Aim: To determine the effect of oral administration of an aqueous extract from the roots of Lepidium meyenii (maca)on spermatogenesis in adult male rats. Method...
[期刊论文] 作者:F. Giubileo,A. Kohen,Th. Prosl, 来源:光散射学报 年份:2004
The discovery of the superconductivity with remarkably high critical temperature (TC ~ 39 K) in the binary intermetallic MgB2 compound[1]has given rise to a cons...
[期刊论文] 作者:Nazifa,F. M. Aminuzzaman,L., 来源:美国植物学期刊(英文) 年份:2004
Rice is the most staple cereal crop of Bangladesh and rice blast caused by...
[期刊论文] 作者:Jose F. R. Diogo,ZHANG Hua, 来源:西南交通大学学报(英文版) 年份:2004
Three known designs for parking, frontal, angled and parallel, were presented. Aircrafts at aprons can be parked either by towing equipment (push-back) or by it...
[期刊论文] 作者:F. HERENCIA,P. A. GARCA-GAL, 来源:土壤圈(意译名) 年份:2004
To evaluate the use of organic amendments as an alternative to conventional fertilization,a 10-year experiment on a loam soil was conducted under a crop rotatio...
[期刊论文] 作者:MARRAFFA,F. MAZOU,Ph. REYNI, 来源:中国航空学报(英文版) 年份:2004
给出了两种不同的再入飞行器:充气的再入和下滑演示器(IRDT)和Huygens.两者的任务都涉及在靠近轨道的条件下再入并均已于2005年完成.概述了IRDT的使命和具体设计问题,综述了I...
[期刊论文] 作者:F. Geiger,S., 来源:中国海洋大学学报(英文版) 年份:2004
In the coastal catchments of Shandong Province the water scarcity is aggravated due to saltwater intrusion, reducing the usability of water resources available....
[期刊论文] 作者:Kerres,F. Schnberge, 来源:复旦学报(自然科学版) 年份:2004
1IntroductionThe proton exchange membrane (PEM) is one of key components in fuel cell system. Its properties are very important in determining PEMFC performance...
[期刊论文] 作者:F. Chen,H. Zhou,Y.F.Zhang,J.D., 来源:金属学报(英文版) 年份:2004
A new net-shape cathode sputtering target which has a simple structure and a high sputtering was put forward. The multiple-structure made of alloying and coatin...
[期刊论文] 作者:WANG An-bao,Joseph F. Foss,YUA, 来源:高等学校化学研究(英文版) 年份:2004
A high performance liquid chromatography(HPLC) method coupled with electrochemical detection and solid phase extraction is described for the separation and dete...
[期刊论文] 作者:BAGHERI,F. SHARI, 来源:中国有色金属学报(英文版) 年份:2004
搅拌摩擦焊(FSW)被广泛应用在工业上,用来连接有色金属,尤其是铝合金。采用基于有限元分析的三维模型研究FSW过程中铜C11000的热特性。模型包含了搅拌头的机械作用和待焊接材料...
[期刊论文] 作者:李军,F. Maisano,O. Alfieri, 来源:华中科技大学学报(医学版) 年份:2004
1996年1月至7月在14例高危患者中,采用不使用体外循环的左胸微创径路完成冠状动脉搭桥手术.患者的高危情况包括左室功能不全,充血性心力衰竭,年龄70岁以上,慢性肾功能衰竭,中...
[期刊论文] 作者:F. ABOUHILOU,H. AZZEDDINE,B. M, 来源:中国有色金属学报(英文版) 年份:2004
在室温下将Pb-0.08Ca-2Sn合金轧制到不同厚度.电阻率和显微硬度的测试结果表明,样品在80~120℃的温度区间退火时发生再结晶.XRD检测确定变形组织为Brass型,所测得的Lankford各...
[期刊论文] 作者:James WANG,F. Steven WANG,Gang, 来源:船舶与海洋工程学报(英文版) 年份:2004
Spans occur when a pipeline is laid on a rough undulating seabed or when upheaval buckling occurs due to constrained thermal expansion. This not only results in...
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