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material
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  材料
    Theoretical and Experimental Study of Active Vibration Control of Intelligent Composite Material Structures with Embedded Piezoceramics
    埋入压电材料的智能复合材料结构振动主动控制理论和实验研究
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    Study on Harmonic-Mitigation Technology of Electric Equipment for Material Manufacture
    材料电加工设备谐波抑制技术的研究
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    Effects of the Second Phase on the Preparation and Properties of MoSi_2 Material
    第二相对MoSi_2材料制备与性能的影响
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    Study on the Biomimetic Chitosan Medical Material with Layer Structure
    仿生层状结构壳聚糖医用材料的研究
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    Study on the Shaped Basalt Fiber Composite Material and Its Degradation Mechanism
    玄武岩纤维复合型体材料及降解机理研究
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  材料的
    Theoretical and Experimental Study of Active Vibration Control of Intelligent Composite Material Structures with Embedded Piezoceramics
    埋入压电材料的智能复合材料结构振动主动控制理论和实验研究
短句来源
    Study on the Biomimetic Chitosan Medical Material with Layer Structure
    仿生层状结构壳聚糖医用材料的研究
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    Study on Nano-scale Nickel Hydroxide Used as Electrode Material
    纳米氢氧化镍电极材料的研究
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    Preparation and Research of Fe_3Al-Based Composite Friction Material
    Fe_3Al基复合摩擦材料的制备与研究
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    Synthesis of Mg-based Hydrogen Storage Material and Studies on Hydrogenation Properties
    镁基复合储氢材料的制备及气态储氢性能研究
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  复合材料
    Theoretical and Experimental Study of Active Vibration Control of Intelligent Composite Material Structures with Embedded Piezoceramics
    埋入压电材料的智能复合材料结构振动主动控制理论和实验研究
短句来源
    Preparation and Characterization of the Cu/LDPE Nanocomposites: A Novel Material for Use in Intrauterine Devices
    新型宫内节育器材料——纳米金属铜/聚乙烯复合材料的制备与表征
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    Research on the Preparation and Properties of Silver Tin Oxide Composite Material
    银氧化锡复合材料的制备及性能研究
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    Similar Subdomain Boundary Element Method and Its Application in Simulation of Particle Composite Material
    边界元相似子域法及其在颗粒复合材料模拟中的应用
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    Study on the Wear Behaviour and the Wear-Resisting Design Criterion of the C/Cu Composite Material
    C/Cu复合材料的磨损特性及耐磨损设计准则的研究
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    The Classification of the Effects of the Addition Elements on the Slope of the Bm-T Curve of Thermal Sensitive Magnetic Material
    添加元素对热敏磁性合金Bm-T曲线陡度影响的分类
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    The Improvement of the Interfacial Bonding of the Self-Lubricating and Wear Resistant Sealing Material, PEC, for a Compressor
    提高压缩机自润滑抗磨密封材料PEC的界面力之研究
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    The Expression of Free Energy for Thermoelastic Material and Its Relation to the Variable Material Coefficients(Abstract)
    热弹性材料的自由能表达式及其与变物性系数的关系(摘要)
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    Study on Degeneration Mechanism and Protected Method of YBa_2Cu_3O_7 Material
    YBa_2Cu_3O_7超导材料的退化机制和保护方法的研究
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    THE MECHANICAL PROPERTIES IN YBa_aCu_3O_7-σ POLYCRYSTALLINE MATERIAL
    单相多晶YBa_2Cu_3O_(7_δ)超导体的力学性质
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  material
The material presented here is a synopsis of the Ph.D thesis of the author, cf.
      
Compound 4, 5, 6, 7, and 8 were synthesized from 4-benzoyl-1,5-diphenyl-1H-pyrazole-3-carboxylic acid 1 as a starting material.
      
Inverse computation of optical-absorption coefficient in inhomogeneous material with varied thermal conductivity
      
It showed that the bromide in the rosin glycerin ester decomposed faster than the ester; hence it may be used as fire-resistant material.
      
The biomimetic three-dimensional porous composite can serve as a kind of excellent scaffold material for bone tissue engineering because of its microstructure and properties.
      
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Many oxides of heavy metals when existing not in exact stoichiometric combining ratios exhibit the properties of a semi-conductor.The resistance ofsuch materials has a very large negative temperature coeffcient.Such thermallysensitive resistors,known as“thermisters”,have found wide range of appli-cations in thermometry,communication engineering,etc.In this investigationwe tried over hundred samples of metallic oxides and their mixtures fusedwith glass powder to form small compact bead on Pt lead wires.The...

Many oxides of heavy metals when existing not in exact stoichiometric combining ratios exhibit the properties of a semi-conductor.The resistance ofsuch materials has a very large negative temperature coeffcient.Such thermallysensitive resistors,known as“thermisters”,have found wide range of appli-cations in thermometry,communication engineering,etc.In this investigationwe tried over hundred samples of metallic oxides and their mixtures fusedwith glass powder to form small compact bead on Pt lead wires.The sampleswere treated by a new firing technique which is very convenient in laboratory.Some samples made from mixed oxides of Mn,Co and Ni showing a resistanceof 10~4-10~5 ohms at room temperature and 10-100 ohms at 500℃ seem.verypromising for practical purposes.

多种重金属的氧化物,经高温煅烧后,均可呈现电子性半导体的性质,其电导随温度急剧变化,故可作测量温度之用,通常称热感电阻。从电导的对数与温度的倒数的图中,可以推算半导体电导性所需的电子能位差。本文试验氧化物混入玻璃粉制成的小珠,用半导体体内电热法制成热感电阻,在常温时的电阻值为10~4—10~5欧姆,在500℃时只有10—100欧姆。半导体与铂导体线间的电性接触,经实验推知是良好的。这种制备方法,在实验室里,非常简易。经多次试验,以混合锰、钴、镍的氧化物和玻璃粉制成的电导性较大,有实用价值。

The“Drop-and-Cover”method developed by us for preparing replicas is carriedout by applying first a few drops of an organic solvent on a prepared surface of a me-tal specimen and then covering with a sheet of dellulose acetate or similar materials.Through the softening action of the solvent on the plastic sheet and the exclusion ofair between the metal surface and sheet,atmospheric pressure will bring intimate contactof the two together,thus producing a“negative”replica.A“positive”replica may bemade from...

The“Drop-and-Cover”method developed by us for preparing replicas is carriedout by applying first a few drops of an organic solvent on a prepared surface of a me-tal specimen and then covering with a sheet of dellulose acetate or similar materials.Through the softening action of the solvent on the plastic sheet and the exclusion ofair between the metal surface and sheet,atmospheric pressure will bring intimate contactof the two together,thus producing a“negative”replica.A“positive”replica may bemade from this when required.These replicas can be used directly for metallographicstudies either on a biological or a metallurgical microscope without any furthermodification.

本文讨论如何应用“滴液盖片法”制造胶质代替膜来代替不透明的金属样品使能直接利用生物显微镜观察金属内结构,同时亦可利用金相显微镜观察而得到同一结果。

The presence of a small amount of CaO in the zine -bearing square-loop mangane- se-magnesium ferrites tends to change their static magnetic properties so that the re- ctangular ratio(Br/Bm)is increased from 0.88 to 0.93 and the coercive force (Hc)is reduced from 0.63 oersted to 0.43 oersted.Thus these CaO-admixed ferrites better meet the specific requirments as square-loop magnetic materials.

在带锌矩磁锰镁铁氧体中加入小CaO,可使静态磁学性能变得更好,不但矩形比(Br/Bm)得到了提高(从0.88到0.93),而且矫顽力(Hc)还进一步降低(从0.65奥斯特到0.43奥斯特),因此可使它更好地满足矩磁材料的需要。

 
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