查询词典 energy surface density

The relation between low-pressure capacitive RF discharge current density and the ion energy flux when reaching the material surface is investigated.

研究了低气压容性射频放电电流密度与离子到达被加工材料表面的能量通量之间的关系。

By investigating the effect of all the factors, including particle size, density, elastic deformation coefficient, Hamaker constant, surface energy, yield limit and relative velocity, on the particle behavior in the process of collision, the rule of collision and agglomeration with the change of these factors is obtained in detail.

为考察包括颗粒的粒径、密度、弹性变形系数、Hamaker常数、表面能、屈服极限和碰撞初速度等众多因素对碰撞规律和团聚趋势的影响，本文采用"数值实验"方法，获得了碰撞力与范德华力的相互关系、碰撞弹性回复系数和团聚趋势随各参数的变化规律。

The special thermophysical problems involved in high energy density materials surface processing have been studied in this project.

研究了高能束流表面加工与处理中的特殊热物理问题。

All these profit from using the carbon nanotubes with large surface and proper pore distribution as the cathode, which ensure the TiO_2 nanowire anode precede with the faradic reaction in the applied potential range. The hybrid supercapacitor exhibits improved power and energy performances by the increased potential window, particularly in the larger current density.

电化学性能的改善得益于以较大比表面积和适当孔径分布的碳纳米管为正极，在电极／电解液界面处发生静电吸附存贮大量电荷，促使TiO_2纳米线电极可以在较为宽的电位窗口内通畅地进行对应的法拉第反应，维持其优异的电容性能，这将在一定程度上改善了混合超级电容器的功率密度和能量密度，尤其在较大的电流密度下更有优势。

The relative variation of the slope of curve pairs of isothermal surface potential decay is first time used to study trap energy density creation.

这一理论结果填补了长期以来介质电老化只有经验公式而没有理论基础的空白。

With the energy equilibrium, we obtain therelations of oblateness e, period P, period derivation〓,surface magnetic field B, averge density ρ, and the evolutions of those quantities.

但对高速自转的脉冲星(如超新星1987A中0.5毫秒脉冲星)，由于自转的作用而成为扁形的椭球体，此时星体的形变能量就会起很大作用。

According to the concept of strain energy of cracked materials, the orientation tensor of crack was defined. Considering the crack-closing and friction between crack surface under compression, The damage tensor, damage strain and effective elastic modulus were formulated. A method for discrete description of damage mechanism was given, and the evolution equation of discrete orientation density of crack was obtained. The relationship of micromechanism and the macro-representation of concrete failure were studied.

从含裂纹材料的变形能出发，引出了裂纹的方位张量；在考虑裂纹受压闭合与滑动摩擦的基础上，给出了损伤张量、损伤应变和有效弹性系数的表达式，在损伤机构离散化方法的基础上，给出了方位密度的演化方程；将上述损伤理论应用于混凝土的损伤分析，研究了混凝土破坏的微观机制与宏观表现的关系及Griffith准则和Mohr-Coulomb准则的相似性问题，对修正的Griffith准则进行了改进。

It is also found that the value of maximum energy conversion efficiency depends on the values of κa and surface charge density.

此外，最大能量转换效率随κa改变时，可发现一极值，此极值之大小，及κa值发生处，随壁面电荷密度之增加而增加。

It has raised great interests of research on interface of heterogenic material combination in resent years. In this research program, Al2O3, AlN and Si3N4 ceramics include Si samples had been surface metallized by pulsed high energy density plasma gun, and micro and macro behavior of interface between metallic film and substrate were studied in detail.

异质材料结合的界面研究是近年来材料研究的热点之一，本课题采用脉冲高能量密度等离子枪对氧化铝、氮化铝和氮化硅等纯陶瓷以及纯硅片材料基片表面进行金属化，进而对于金属膜/基底界面的微观和宏观行为进行了研究。

The characteristic of machined surface of high speed machining aluminum alloy 7050-T7451 is researched by micrographic experiments and analysis. The formation mechanics of machined metamorphism layer has been analyzed and studied. The dislocation-energy model in machined metamorphism layer was established and applied to explain the micrographic mechanics work-hardening using the thermo-mechanical coupling deformation theory and dislocation theory. The experimental results show that the interaction of high dislocation density effect on hardening is more remarkable than that of thermal stress in high speed machining.

利用显微观察方法对铝合金7050-T7451高速铣削加工的工件表面断面和不同深度的表层的微观形貌特征进行系统的研究，确定了高速切削加工铝合金7050-T7451的表面变质层深度为30～35μm；应用位错能量研究了高速铣削加工过程的热力耦合对变质层的影响机理，并通过微观形貌观察证明：与普通切削相比，高速铣削表层塑性变形的能量和位错密度更高；建立了位错密度的加工硬化的动力学模型，研究了加工硬化的热-力耦合形成机理；对微观裂纹的形成机理进行了理论分析，证明位错密度高的高速切削过程中较低速加工更容易产生明显的微裂纹，从分子级乃至原子级的水平进一步揭示高速切削加工表面变质层的形成特征。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。