相变

We also find two species can coexist only when taking the medium values in some range of parameter,if it is too large or too small only one population can exist or none of them can .

其它的参数不变，而只变化某一个参数的取值，且这一取值变化符合这一参数划分区间，定态会经历这一区间内的多种状态，且会出现临界点，普通渗流与定向渗流类相互转化，且出现两个临界点，两次相转变。

A logical product structure model was constructed which can describe the infinite product variants,and support to solve product configuration under the mixed environment of Assemble-to-Order and Make-to-Order. In order to be identified and managed ,Logical product structure model was described with the knowledge representation method based on production rule.Finally the feasibility of the method was confirmed by simulation of a simplification automobile product family.

构建了一种逻辑产品结构模型，它能够描述无限种可能的产品变体，支持解决按订单制造与按订单装配相混合环境下的产品配置问题；并用基于产生式规则的知识表示方法描述了逻辑产品结构模型，以便于计算机识别及处理，最后通过一个简化汽车产品族的案例仿真来验证本方法的可行性。

Combining the experimental results and theoretical analysis, the following work has been accomplished.(1) Reasons of the decrease of interelectrode capacitance and the increase of discharge gap caused by the powder suspended in dielectric fluid are explained. And the mechanism that surface quality of workpiece improved by powder-mixed EDM is analyzed from this viewpoint.(2) The variation regularity of the percentage of silicon on the machined surface of workpiece has been summarized according to the experiment results when silicon powder was added into the working fluid. The entropy is introduced to explain the reasons for this variation regularity by thermodynamics.(3) The dimensional accuracy is greatly influenced by the overcut resulting from discharge gap and electrode wear in practice application. Empirical formulas for the overcut in EDM and powder-mixed EDM are established based on the experimental results using the ternary linear regressive method in this paper.(4) The influence of main factors on the machined surface characteristics has been evaluated based on the orthogonal experimental design method.

通过一系列普通电火花加工与混粉电火花加工的对比实验，运用工艺实验和理论分析相结合的方法，重点做了以下工作：(1)探讨了粉末颗粒导致极间电容减小、放电间隙增大的原因，并从这个角度解释了混粉电火花加工可以改善工件表面质量的机理；(2)以混合硅粉的电火花加工为例，实验得出峰值电流和脉冲宽度对加工表面层成分中硅元素含量的影响规律，并引入熵的概念从热力学的角度对硅元素含量变化的原因寻找了理论依据；(3)在实际加工中，由于粉末的加入使放电间隙变大，这使得混粉电火花加工的尺寸精度难以控制，本文利用三元线性回归的方法，在实验数据的基础上，建立了两种电火花加工过切量的计算公式；(4)将正交试验法应用于混粉电火花加工实验研究，并通过对实验指标极差的直观分析，得出各电参数对加工指标影响的敏感程度。

On the other hard, intergranular carbides also increase the stress sensitivity of creep rate and creep activation energy.

利用该模型和单相合金的数据不仅能预测晶界析出合金的蠕变速率而且能导出后者的应力指数和激活能。

In recent years,the development of theinterface processing techniques makes the interphase to play an ever-important role inthe interface fracture analysis.

近年来，界面加工技术的发展使得界面相物质在界面断裂分析中的作用变得日益重要。

Traditional frequency multiplier chain could obtain high stable and low phase noise signals, but it has complex circuit structure and needs to solve these problems of interstage circuit matching and filtering, which become prominent as the increase of operation frequency.

传统的倍频放大链路虽然能够获得高频率稳定度、低相噪的毫米波信号，但其电路结构复杂，降低了系统的稳定性；同时还需要解决级间匹配滤波的问题，这在毫米波频段高端变得更为突出。

Traditional frequency multiplier chain could obtain high stable and low phase noise signals, but it has complex circuit structure and needs to solve these problems of interstage circuit matching and filtering, which become prominent as the increase of operation frequency. Avalanche device is the important solid power device to generate millimeter wave signals.

传统的倍频放大链路虽然能够获得高频率稳定度、低相噪的毫米波信号，但其电路结构复杂，降低了系统的稳定性；同时还需(来源：A9bBb532C论文网www.abclunwen.com)要解决级间匹配滤波的问题，这在毫米波频段高端变得更为突出。

Type IB: Isocline is convergent towards inner arc at a right angle to the fold.

根据等斜线的收敛层度，再细分为三个亚型：IA型：等弧线向内弧强烈收敛，各线长短判别极大，内弧曲率远大于外弧曲率，为典型的顶薄褶皱；IB型：等倾斜线向内弧收敛，并与褶皱面垂直，各线长短大致相等，褶皱层真厚度不变，内弧曲率仍大于外弧曲率，为典型的平行褶皱；IC型：等斜线相内弧轻微收敛，转折端等倾斜线比两翼附近的要略长一些，反应两翼厚度有变薄的趋势，内弧曲率略大于外弧曲率。

Furthermore, some element of learning is often evident since younger birds do not build with sticks of quite unsuitable size, while a jackdaw's first nest includes virtually any movable object.

此外，在鸟儿不断练习种渐渐变老以后和他们年轻的时候相比较，它们筑巢的学习成分会明显的体现出来。例如年轻的乌鸦最初试图用树枝去建一个尺寸很不合适的窝，穴乌的第一个巢包含的所有东西几乎都能是松动的。

Finally, a one phase 2 kVA prototype is designed to verify the validity of the power balance strategy for II-type.

最后通过一台单相容量为2 kVA的原理样机对3单元II型级联多电平逆变器的均衡策略进行了实验验证。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。