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With the rapid development of the Android mobile applications, people’s daily life is more and more mobile applications......
采用激光立体成形技术(Laser Solid Forming, LSF)制备了多孔钛合金材料, 研究了激光立体成形工艺参数对多孔钛孔隙的影响以及多孔......
为了获得综合性能优良的含氮奥氏体不锈钢激光熔覆层,以经过超高纯氮气处理的固溶渗氮AISI304粉末为原料,采用激光熔覆技术制备了......
在45#钢基体上,选用不同的激光功率、扫描速度、送丝速度,用专用焊丝进行堆焊试验。结果表明:当速度不变 时,激光功率增加,其热影......
【Abstract】In recent years， with the sustained and rapid development of social economy， people enjoy the conquering natur......
It is time to question an accepted social practice that is in fact quite unacceptable， and in our time more than repellen......
Important progresses in the study of laser additive manufacturing on metal matrix composites(MMCs)have been made.Recent ......
本文基于企业投资的视角,以2002—2009年中国制造业上市公司为对象,考察了技术引进、产权性质与企业绩效之间的关系。研究发现,企......
采用EAF＋LF＋VD＋CC＋CR的工艺开发了一种含Cr、Mo汽车传动结构用钢SCM415。对化学成分、组织和力学性能进行分析,结果表明：开发的SCM415钢......
Abstract Light is crucial to the uniform production of high-quality fruit since it is the driving force for leaf photosy......
Due to excellent,unique and safe properties of rare earth,it is a common method to integrate rare earth with polymer mat......
Microstructure and properties of the joints of Cu/Cu and metallized Cu / kovar brazed with a low-sil
In an attempt to develop low-silver brazing filler metals used for hermetic sealing materials in the vacuum interrupter ......
采用实验研究的方法,探究了高功率激光成形Ti-6Al-4V合金组织演化规律和力学性能。研究结果表明:高功率激光成形Ti-6AL-4V合金的组......
研究了采用大光斑半导体激光进行表面堆焊时,保持其它工艺参数不变,不同的激光功率(900、1 100、1 300、1 500、1 700W)在Q235基体......
◆Abstract：Agar is a biodegradable polymer material，which is a hydrophilic colloid and has certain application value in ma......
309L is a kind of austenitic stainless steel.This paper discusses 309L,which was smelted and rolled in a lab.Its microst......
在Ti(C,N)基金属陶瓷固相烧结阶段,进行了烧结气氛分别为真空、低压氩气及不同压力氮气气氛的实验。研究了固相阶段烧结气氛对合金......
Comparative studies on fouling of homogeneous anion exchange membranes by different structured organ
Five negatively charged organic compounds with different structures,sodium methane sulfonate (MS),sodium benzene sulfona......
Effects of Heavy Metals and Saline-alkali on Growth, Physiology and Biochemistry of Orychophragmus v
Abstract [Oh.jective] The aim was to study on effects of heavy metals and saline-al- kali on growth, physiology and bioc......
针对高品质大规格低碳高硫高磷钢(简称GY15)的特点,炼钢采用转炉低碱度保硫保磷、精炼低碱度弱搅拌、连铸低拉速弱冷却等工艺,轧钢......
The physical characteristics of Ni-based superalloy powder with different particle sizes produced by plasma rotation ele......
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......
Influence of yttrium on microstructure and properties of NieAl alloy coatings prepared by laser clad
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......
Studies were carried out on the transesterification of the Chinese Spicehush (Lindera communis) seed (LCS) oil with meth......
为了更好的开发和利用新培育的“济甜杂”系列耐盐碱高粱品种，本实验采用湿磨法提取了高粱淀粉，并对淀粉样品的持水力、透光率、冻融......
为了解决现有降温涂层成本高、环保性差、路面污染后降温效果显著下降等问题,制备了一种新型路用降温涂层,通过干燥时间、黏结性能......
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用甲苯二异氰酸酯、聚醚多元醇和巯醇通过三步法合成出一种具有聚氨酯主链结构特征巯基封端的液体橡胶(MTPU)。研究了不同的催化剂......
以玉米芯为原料,甲基丙烯酸丙烯酰胺为混合单体,硫酸亚铁铵-过氧化氢为还原体系引发剂,N,N’-亚甲基双丙烯酰胺为交联剂,在水介质......
为了说明聚醚酯纤维的形态结构与性能的对应关系,选择不同软硬段含量的聚醚酯切片进行熔融纺丝试验。结果发现:随着硬段含量的增加......
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......
Effect of Cooling Rate on Structure and Properties of Wear-Resistant Low Chromium Cast Iron after Ho
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......
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......
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......
The Properties of Road Base Course Materials of Granular Soils Stabilized by AGS Granular Soil Stabi
The properties of road base course materials of granular soils stabilized by AGS granular soil stabilizing cement[1]were......
The samples of the GeS2- Ga2 S3- CdS pseudo-tary glassy system were prepared by conventional melt-quenching techniques. ......
The structure of bacterial cellulose (BC) produced by Acetobacter xylinum NUST4 (A.xylinum NUST4) under static (SBC) and......
Polycarbonate/Polypropylene/Fibrillar Silicate Ternary Nanocomposites: Morphology and Mechanical Pro
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The Ti-24Al-15Nb-1.5Mo alloy,in the as-forged and heat-treated states,was joined to the as-forged TC11 titanium alloy by......
自2000年以来，在一些发动机工程中使用的铸铁缸套已在轻质金属曲轴箱内孔热喷涂铁基涂层所取代。相对于直接浇铸缸套，没有缸套的Al曲......
Separation and purification of proteinases from Gastric Mucosa of Northern Sheatfish, Silurus soldat
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......
选取了不同细度的超高相对分子质量聚乙烯(UHMWPE)纤维,使用二维广角X射线衍射仪表征纤维结构,利用差示扫描量热仪、万能试验机、......
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以环丁砜(TMS)和水(H2O)为反应介质,制备丙烯腈/衣康酸共聚物.利用FTIR、SEM、WAXRD和DSC等方法研究不同溶剂配比对共聚物结构性能......
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......
本文通过对荣华二采区10...
Pride and prejudice is Austin’s great work. Through the discussion of the different marriages and love, the writer demo......
Properties of TRPO-HNO3 complex used for direct dissolution of lanthanide and actinide oxides in sup
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......
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......
Morphology and property investigation of primary particulate matter particles from different sources
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......
