Preci相关论文
Ti-based alloys have been widely applied in the aerospace field,owing to their outstanding performance. Precision castin......
Synthesis of mesoporous nano-TiO2 doped with Sn by auto-assembly method and photo-catalytic property
A series of mesoporous nano-TiO2 material doped with Sn are synthesized by a homogenous precipitation method aided by mi......
An optimal design approach of high order FIR digital filter is developed based on the algorithm of neural networks with......
In Crypto’05, Boneh et al. presented two broadcast encryption schemes. Their work has exciting achievements: the header......
Modeling of a Schottky Diode in CMOS Process with a Flexible “Open-Through” On-Chip De-embedding Met
Modeling of Schottky diodes in the CMOS process is a key step in ultra-high frequency(UHF) radio frequency identificatio......
The crystal of the title compound, 3-(4′-Methoxyl)-phenyl-5-cyano-6-methylthio pyrimidine-2, 4-diones, ([C13H11N3O3S]2,......
Solid-liquid Extraction Spectrophotometric Determination of Copper with 2,9-dimethyl-1,10-phenanthro
Solid liquid extraction of copper ion (I) with 2, 9-dimethyl-l, l0-phenanthroline (neo-cuproine, DMP) into molten naphth......
Based on the long-term monitoring data on CO2 concentration, variation trend and characteristics of CO2 background conce......
By using coupled differential interferometry a new laser displacement measurement interferometer with nanometric accurac......
Micro-plasticity Constitutive Model Taking Account of Size Effects for Pure Aluminum by Microindenta
The macro-plasticity power function constitutive model(MPFCM), the modified macro- plasticity power function constitutiv......
By employing the information-reshufflingmethod that integrates census data, precipitation dataand inquiry data of water ......
[Objective] To establish an HPLC-ELSD method for the determination of four ginkgolides (including ginkgolide A, ginkgoli......
The enthalpies of sublimation and fusion and triple-point temperatures of 2-bromo-. 3-bro-mo- and 4-bromobenzoic acids h......
Synthesis and Structure of a New Dinuclear Molybdenum(I) Compound with Cyclohexanthiolate Ligand, [M
The reaction of [Et4N]2[Mo2(SC6H11)2(CO)8] and I2 in MeCN affords a new dinu- clear molybdenum(I) complex [Mo2(SC6H11)2......
The EDTA dianhydride reacted with diazacrown ethers to obtain the water-soluble EDTA-diazacrown ether polymers 1~3. The......
Based on the empirical electron theory of solids and molecules (EET), the phase valence electron structure parameters of......
The effects of boron on the solidification behaviors of Ti45AlxB alloys were studied by high temperature samples. These ......
Effects of Finish Rolling Temperature on Microstructure and Mechanical Properties of Ferritic-Rolled
The steels were rolled at 3 different finishing temperatures. The mechanical properties were tested by tensile tests. Th......
In situ synthesis and hardness of TiC/Ti_5Si_3 composites on Ti-5Al-2.5Sn substrates by gas tungsten
TiC/Ti5Si3 composites were fabricated on Ti-5Al-2.5Sn substrates by gas tungsten arc welding (GTAW). Identification of t......
Control rod drive mechanism(CRDM)is one of most important components concerning reactor safety and used for nuclear reac......
High-temperature Tensile Behavior in Coarse-grained and Fine-grained Nb-containing 25Cr-20Ni Austeni
In this study,tensile behavior of Nb-containing 25Cr-20Ni austenitic stainless steels composed of coarse or fine grains ......
The effect of copper content on quench sensi-tivity in novel Al-Zn-Mg-Cu alloys containing high zinc content was investi......
降水量序列作为非线性序列的一种,其复杂程度关系到地表径流的产生与地下水动态变化.为了分析吉林省降水变化复杂度的空间展布情况......
为研究气压对激光诱导击穿光谱检测性能的影响,实验研究了0.01～100.00 kPa大气压强下钢铁样品中FeⅠ438.35 nm和Fe Ⅰ 404.58 nm谱......
To obtain the form error of micro-structured surfaces robustly and accurately, a form error evaluation method was develo......
针对航空发动机叶片三坐标测量机(CMM)测量过程中误差检测与评定的问题,提出了一种带公差约束的数字样板叶型检测方法,以实现叶型......
保证目标在视场内是跟踪测量设备工作的前提条件,工程中通常采用概率对其进行描述。针对动目标光学设备探测概率精确求解的问题,提......
Effect of oxygen content and heat treatment on carbide precipitation behavior in PM Ni-base superall
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......
Spatial Variability of Soil Chemical Properties in the Reclaiming Marine Foreland to Yellow Sea of C
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......
Spatial Variability of Soil Chemical Properties in the Reclaiming Marine Foreland to Yellow Sea of C
Precise information about the spatial variability of soil properties is essential in developing site-specific soil manag......
基于削弱实时动态精密单点定位多路径效应的目的,首先分析了多路径误差的产生原理,利用信噪比与高度角的关系判断多路径产生的来源......
两种商用800 MPa级复相钢拉伸后分别出现了正常断裂和断口分层两种状态。通过金相显微镜(OM)、扫描电子显微镜(SEM)、能谱分析(EDS......
【目的】构建包含竞争指标和气候因子的胸径生长模型,分析竞争和气候及其交互作用对杉木人工林胸径生长的影响,为气候变化背景下模......
应预测、基因表型预测等方面的研究进展,指出了影像组学对头颈部肿瘤的精准诊断和预后判断具有重要意义。分析了头颈部肿瘤影像组......
摘 要：传统的全站仪或RTK技术进行土石方的填挖计算，需要耗费大量的人力和物力，而且效率比较低，成本相对比较高。本文研究利用消费级无......
为明确虫口基数、小麦品种和降水对麦红吸浆虫危害程度的影响。2013年和2014年,在陕西周至县选择4块麦田,调查分析麦红吸浆虫春季......
利用1961-2010年巴里坤县站的气象资料,分析了50年来气温、降水、日照时数、大风日教的变化特征,结果显示：巴里坤县冬季、夏季、年......
介绍了测定结果误差的统计模型，依据数理统计学原理及相应的标准，结合实例从评定方法简述、精密度评价、正确度评价等方面阐述在实验......
采用相分析和X射线衍射技术，研究了含Ti、Nb等微合金元素的高强钢中碳氮化物的溶解行为．结果表明，加热到1250℃，未均热时，主要是面心立......
<正> 高压下气体在混合溶剂中溶解度的测定与研究,无论在理论研究或是实际应用方面均具有重要的意义。但由于进行这类研究,特别是......
介绍了浮动锻造加工技术的国内外发展概况与技术展望,阐述了大力发展浮动锻造加工技术的可能性与必要性.......
The effect of the second phase precipitation behavior on the mechanical properties and fracture behavior of the modified......
通过硫酸铵沉淀、Sephadex G-100凝胶柱层析和HPLC分离等方法,从油菜饼的水溶性成分中分离得到蛋白质(肽)提取物.采用抑菌圈法测定......
设计了一种玉米深松全层施肥精量播种机。该机具进地一次可完成深松、全层施肥、精量播种、覆土和镇压等多项作业,并能打破犁底层,......
精确电子战是电子对抗领域新的研究重点，精确电子战系统能够使多种机载或地面平台的干扰机一起工作并把干扰能量集中到一小块区域内......
以第四届大学生工程训练综合能力竞赛的项目——摆-球＂永动器＂为依托,针对不合理的加工制造工艺,结合机械制造工艺学、精密机械加工......
双三次B样条曲面具有控制点特征的高保真性,介绍了根据格网DEM构建均匀双三次B样条曲面的方法,并实现了曲面的多分辨率插值,完成了......
统计1970—2009年南阳市气象站降水数据,分析了近40年南阳市降水量随时间的变化特征及降水类型的分布特征,研究结果表明：（1）近40年南......
采用透射电子显微镜（TEM）、选区电子衍射（SADP）和硬度测试等手段研究1973高强高韧铝合金在不同温度下的单级时效析出及硬化行为。结果......
我国已出版多部法律英译本，评估译本质量需要先确立一定的翻译原则。该文结合《商业银行法》三个英译本的不足之处，论述了法律翻译的......
