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It has been found that, the matrix hardnesses is reduced by about 30 % with the increase of parameter P, and there exists a hardness gradient in phase α from grain center to grain boundary, which is in correspondence with the concentration gradient of alloy elements.

多年来的研究业已发现珠光体耐热钢在高温下长期运行中会发生珠光体球化、碳化物聚集、合金元素在固溶体和碳化物之间重新分配等组织变化[1]。

The stable region＇s boundary curve expression is obtained with the off-focus amount as a design parameter.

分析结果表明，对于子腔预先给定的参量，只要另一子腔满足适当的失调量，整个谐振腔就是稳定的。

At last,for the double integral which the boundary curve of its domain of integration is denoted by the panameter equation, we will supply a directed method which do not eliminate the parameter.

对积分区域的边界曲线由参数方程表示的二重积分，我们也将给出两种不经消参数而直接计算的方法。

Based on testing data,combining well test,recovery and other geologic data,by pressure diagnose,curve analog and boundary analysis,an accurate reservoir parameter can be gained.

以试井资料为基础，结合试油、试采及其它地质资料通过压力诊断、曲线拟合、边界分析等，得到准确的油藏参数。

It puts forward the main drawing methods on curve boundary, namely the parabola parameter pattern calculating methods.

结论证明，此法可以提高成图速度，简化成图手续，促进地籍管理的信息化、自动化。

The first is how to determine boundary curve of surface in triangular domain and after deducing, simultaneous equations is proposed in the dissertation. The second is how to determine the coupling parameter. The third is present simultaneous equations in order to obtain G1 continuous considering the continuity between two triangular patches and the fitness rules.

具体的工作体现在三个方面：一是对拟合条件下的三角域曲面边界线的确定，本文经过推演给出了求解方程组；二是对耦合参数的确定；三是在考虑相邻两片三角域曲面连续性的同时将拟合的规则纳入，给出了求解方程组以达到G 1连续。

The main purpose of the dissertation is to introduce the concept of "generalized parameter" to the Boundary Element Method.

本文的创新点在于尝试将"广义参数"的概念引入到边界元法的分析中，尝试探寻边界元法求解断裂力学的新理论和新途径。

R~n(n≥0) is a bounded domain with smooth boundaryΩ;ΔisLaplace operator; u and v, respectively, denote populaton densities of prey andpredator species, inhabit the domainΩ; a_i, b_i, c_i, D_i(i=1,2) are positive constants.the form of boundary parameter B is?

R~n(n≥0)是边界Ω充分光滑的有界区域；△为Laplace算子；u，v分别表示区域Ω中食饵和捕食者的密度，参数a_i，b_i，c_i，D_i(i=1，2)均为正常数，而边值参数B形式为这里的？

The damage bounding surface concept is introduced to develop the modified four parameter Hsieh-Ting-Chen model.

通过引入损伤边界面的概念，导出了包含损伤变量的四参数Hsieh-Ting-Chen 边界面模型。

Damage function is introduced in elastic and plastic modulus expression of the bounding surface formulation directly; then a bounding surface damage model for structural soft soil is developed; the complication induced by introducing damage parameter into the bounding surface equation is avoided and its numerical implementation is easy for the analysis of earth structures.

在边界面理论的弹塑性模量中直接引入损伤函数，建立结构性软土的边界面损伤模型，避免了在边界面方程中引入损伤变量带来的复杂性，易于在土工数值分析时采用。

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。