参数曲线

The curve of third harmonic sound pressure level(SPL3)is alsoa "periodic function".The period length is about"first resonancefrequency" of the tube Δf=f0=c0/(2L).The magnitude of SPL3 canbe predicted by Coppens theory(with one of the parameters modified).

三次谐波声压级变化曲线为一"准周期"函数，周期长度为驻波管的第一共振频率值Δf＝f0＝C0/2L，用Coppens所推导的"共振"时公式，计算三次谐波共振峰的量值，表明仍存在差异，只有经过参数修正才能所得结果。

So the parameters are used to monitor state of swine herd production in a period. According to number of basal sow and practically reproducing state on current swine farm, using computer to calculate standardized swine herd data, compare with the fact data of hogpen swinery production.

原理是依据现有猪场的基础母猪数量和猪群的某个时间段初期的实际繁殖状态，通过计算机根据工厂化养猪理论参数模拟运算产生出标准猪群生产数据，将之与猪场猪群生产的实际数据相比较，并制出曲线对比图，从对比图中可直观看出猪群生产中的各个环节的优劣，这样就实现了对猪群生产的某个时间段的动态监测功能。

A method was developed to determine the activation energy and material parameters in the hyperbolic sine constitutive equation.The activation energies determined are 570 kJ／mol and 548 kJ／mol for steel T122 in saturation stress and peak stress,respectively.The values of critical strain for dynamic recrystalli...

采用应变硬化速率—应力曲线图较精确地获得了饱和流变应力和峰值应力；用回归法确定了双曲线本构方程中的变形激活能及材料常数，确定了T122钢在饱和应力和峰值应力条件下的变形激活能分别为570和548 kJ／mol；采用力学方法直接从流变曲线确定了T122钢发生动态再结晶的临界应变量，并回归出临界应变量与Zener—Hollomon参数的关系式。

By taking use of self-adaptive searching algorithm, optimal parameters of Incomplete Beta Function can be acquired, thereby obtaining the corresponding optimal transform curve. In this paper, Incomplete Beta Function is applied in contrast enhancement of container cargo inspection image, and the advantages of this function are well illustrated by comparing the experimental results.

Tubbs将图像增强处理中几种常用的非线性变换函数，表示成了一个归一化的非完全Beta函数，通过自适应搜索算法可以确定Beta函数的最佳参数，从而确定了相应的最佳变换曲线，将该函数应用于集装箱检测图像的对比度增强，通过对实验结果的比较，说明了该变换函数的优越性。

Parametric analysis indicates that the optimal solution's trajectory is piecewise linear, and there is a strong relationship between the breakpoints and the infeasibility phenomena.

参数分析表明最优解轨迹的性态是一条分段线性曲线，解轨迹上的破点和不可行现象存在密切关系。

The titanium border grade of Panzhihua is identified by means of statistical and infinitesimal calculus(referring to the data of Yunan's titanium properly) to get optimum application.

通过用统计和曲线积分方法(并适当参考云南钛砂资源的资料)来确定调查区合理的钛砂矿边界品位，达到矿产资源的最优利用；以规则的取样投影图形代替水平投影，对传统的地质块段法储量估算进行了数学纠正以得到合理的估算参数，并对调查区钛砂资源进行了远景储量估算。

On the software we use the platform of Lab Windows/CVI, adopted the modulation design method, has realized the gathering signal real time and display, control accurate output of signal, correct processing of tentative data, draw and fit the performance curve of parameter through using data inosculation technology.

软件上在Lab Windows/CVI虚拟仪器开发平台上，采用模块化设计方法，实现了采集信号的实时显示，控制信号的准确输出，试验数据的正确处理及应用数据融合技术对性能参数进行拟合从而实现性能曲线的自动绘制。

In light of the approximation of Muskingum flood calculation model,an improving model on average flow within prescribed time in flood calculation is presented using curve integral instead of general arithmetic mean.

针对马斯京根洪水演算模型的近似性问题，用曲线积分法改进了原模型中时段流量的简单算术平均值法，并利用连续性空间优化问题的蚁群算法对改进的马斯京根洪水演算模型进行参数最优估计，使演算流量更加接近实际。

For the first time,Curve equations of flight profiles have been developed using differ-ential and integral calculus method and curve equation of three kinds of flights were giv-en:equal cross-section distribution flights,equal angular distribution flightsand equal horizontal diameter distribution flights.

提出更全面的评价抄板撒落物料特性的数学模型，完成了计算抄板撒落物料特性的计算机程序，绘制了抄板撒落物料的特性曲线，并且以单元撒落密度偏差总和最小为目标，对抄板的结构参数进行优化设计。

By fitting of experimental data of concrete beams with 2-D composite cracks based on the fictitious crack model, mathematical expressions for parameters α and β in the 2-D composite inteneration equations for Ⅰ-Ⅱ,Ⅰ-Ⅲ, and Ⅱ-Ⅲ composite cracks are obtained, and based on the expressions, 2-D composite inteneration curves under different proportions of two stress intensity factors, that is under different weights, at the ends of 2-D composite cracks can be directly derived.

作者中文名：邵勇；王向东摘要：基于虚拟裂缝模型，通过对混凝土二维复合型裂缝梁试验数据的拟合，得到了ⅠⅡ，ⅠⅢ，ⅡⅢ3种二维复合型软化方程中参数α，β的数学表达式。据此表达式可直接求得二维复合型缝端2个应力强度因子之任意比值下混凝土二维复合型的软化曲线。

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。