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Subject Code:B02 With the support by the National Natural Science Foundation of China,a collaborative study by the resea......
Preparation of Lead-based Perovskite Structure Ferroelectric Thin Films by Sol-Gel Method and the Pr
Polycrystalline PZT,PLT and PbTiO ferroelectric thin films,highly oriented PbTiOferroelectric thin films and epitaxial ......
Experimental study of spinel-garnet phase transition was carried out using natural mineral and rock specimens from xenol......
The sinter quality is important for its performance in a blast furnace,and optimizing ore matching is a main way to ensu......
Fourteen new 1-acyl-5-aryl biurets were synthesized by the reaction of aryl ureas with acylisocynantes. The latter was ......
Cembrene (1), a cembrene-type hydrocarbon diterpene, is the first discovered natural-ly occurring fourteen-membered mac......
Dialkylamino-4(3H)-quinazolinones 4 were rapidly synthesized by a solution-phase parallel synthetic method, which includ......
ZrOCl_2·8H_2O catalyzed one-pot synthesis of 2,4,5-triaryl-1H-imidazoles and substituted 1,4-di(4,5-
A simple one-pot synthetic method for the preparation of 2,4,5-triaryl-1H-imidazoles from benzoin or benzil,ammonium ace......
JB/T 9008.2—2004《钢丝绳电动葫芦第2部分:试验方法》中,寿命试验只是一个试验项目,相关内容比较简单。欧盟标准EN14492.2:2006+......
本文所述方法解决了凸轮轴立式测量中定位销中心位置(转角)的测量数据不稳定、重复性不好的棘手问题。笔者把定位销看作是凸轮轴上......
语音识别系统的实用化,需要对噪声有很强的鲁棒性,而噪声环境下的端点检测对整个识别系统性能起着关键的作用.提出一种基于语音学......
分布式电源(distributed generation,DG)具有启动速度快、结构简单、反应灵活等特点,在配电网黑启动中发挥着重要作用。分析了在电网......
讨论一个代数方程迭代解法的局部收敛性.对适当范围的初始值证明该迭代法收敛且至少具有3阶敛速,并讨论Gauss-Seidel加速技巧在其......
考虑低渗油藏污染区内外启动压力梯度不同的特性,推导出了低孔低渗油藏污染井污染前后的产能预测新模型,分析了低渗油藏启动压力梯......
运用振动理论对直线振动筛进行了模态分析及起制动过程分析,在设计阶段,通过系统的动力学特性分析可以修改某些可变参数,使振动筛的运......
利用分形理论提出了Bingham流体在双孔隙率双重多孔介质中径向渗流的分形模型,得到了Bingham流体在双重多孔介质中启动压力梯度梯......
若将他励直流电动机输出功率的机理等效为一个与电动机电枢绕组并联网的可变电阻,可以得到他励直流电动机可变电阻型等效电路图。此......
通过对某电厂柴油发动机起动失败进行原因分析,得出柴油发电机的日常维护及管理中所需做的改进建议。......
在综合考虑流体和多孔介质压力敏感性及启动压力梯度的基础上,建立了微裂缝性特低渗透油藏平面径向稳态渗流的数学模型,采用拟压力变......
目的:探讨肝胆手术术后进行早期肠内营养支持的最佳起始时间。方法选择确诊并接受肝胆手术的住院患者120例为研究对象,随机分为3组(n=......
以某型热动力鱼雷能供系统为研究对象,对鱼雷舷外海水通过雷体上的背压阀直接进入燃料舱增压挤代燃料的工作过程,能供系统管路充填过......