曲线

The polarization curve is not sufficient for a reliable and unique validation of a PEMFC model since different parameters can lead to an identical polarization curve. A three-step validation approach is proposed for a complete and unique validation. These three steps are:(1) validated by the global polarization curve,(2) validated by the local current density distribution curve, and (3) validated by the cathode over-potential and anode over-potential versus current density curve. The results from the comparison of four flow-fields show that the PEMFC performance of the flow-fields decreases in order by interdigitated, metal foam, pin-type and parallel.

通过PEMFC参数敏感性研究发现，PEMFC性能受多种参数的影响，这些参数可分为非敏感性参数、敏感性参数和高敏感性参数；与阳极侧参数相比，PEMFC性能对阴极侧的参数更敏感；不同参数值的组合可以得到几乎完全相同的极化曲线，因此电池的极化曲线不足以用于验证数学模型的唯一性与可靠性；为验证PEMFC数学模型的唯一性与可靠性，提出了模型验证的三步法：极化曲线验证、局部电流密度验证和阳极总过电位与阴极总过电位验证。

In this way, the hysteretic loop curve is not only related to the backbone curve, which is the fact in Masing's model, but also related to the damping ratio curve, so that the shear stress strain behavior under cyclic loads exhibits the actual damping characteristics of the soil.

本文提出了一种基于阻尼构造粘土恢复力模型的方法，使得由此构造的滞回曲线不但与土的骨架曲线相关，而且与阻尼比曲线有关，滞回圈的形状特性反应了土体的真实阻尼特性。

In the fourth part, the experiment equipment is established, images are captured through CMOS, and the result of experiment is analyzed and the calibration curve is drawn, due to the non-linear characteristic of the used light-sensitive transducers calibration, the method of using piecewise linear line to approximate CMOS calibration curve is proposed, which decreased the measurement errors greatly, analyzed the measurement errors and proposed the methods of minishing errors.

第四部分搭建了实验装置，通过CMOS采集了大量的图像，分析了实验结果，做出了标定曲线，鉴于标定曲线的非线性特征，采用逐段折线逼近该标定曲线的方法，大大减小了误差，并进行了误差分析和提出了减小误差的方法。

In the fourth part, the experiment equipment is established, images are captured through CMOS, and the result of experiment is analyzed and the calibration curve is drawn, due to the non-linear characteristic of the used light-sensitive transducer's calibration, the method of using piecewise linear line to approximate CMOS calibration curve is proposed, which decreased the measurement errors greatly, analyzed the measurement errors and proposed the methods of minishing errors.

第四部分搭建了实验装置，通过CMOS采集了大量的图像，分析了实验结果，做出了标定曲线，鉴于标定曲线的非线性特征，采用逐段折线逼近该标定曲线的方法，大大减小了误差，并进行了误差分析和提出了减小误差的方法。

The study results indicate that the dynamic rheological test is an effective means to get the master curve of asphalt mixture which provides the sufficient conditions for the fulltemperature fullfrequency analysis.

研究表明，动态流变试验是获得沥青混合料主曲线的有效方法，主曲线为全温全频分析提供了基础条件，基于主曲线形态提出的5个概念能够客观地反映混合料的本质特性。

Modern ways of controlling acceleration and deceleration can be divided into the trapezoidal speed curve and the S-shaped speed curve.

通过对梯形速度曲线与S形速度曲线的比较，可知S形速度曲线在减小冲击和振动方面更具有优势。

We established the local theories of the curves which are in the semi-Euclidean 4-space, especially ,we considered some special ones of the timelike curve.

建立了R_2~4空间中曲线的局部理论，特别地，我们考虑了类时曲线中的一些特殊曲线。

When NiTi alloys are tensiled at 600 ℃, the dynamic recrystallization occurs. Without electric field, the stress-strain curves were characterized by periodical undee graph, while under the electric field the curves present steady state.

在600 ℃， 2.6×10-2 s-1下，不加电场进行拉伸，得到应力—应变曲线的周期性波浪曲线，而在同样条件下施加电场时，动态再结晶与应变硬化同时发生，形成稳态的流动曲线。

When NiTi alloy was tensiled at 600 ℃ and at a lower strain rate, the dynamic recrystallization occurred. Without electric field the stress-strain curves were characterized by periodical undee graph, while under the electric field they presented steady state. When deformation under the electric field, both strain hardening and recrystallization take place simultaneously, thus the flow stress curves exhibits steady state.

NiTi合金高温拉伸变形过程中会发生动态再结晶，在应变速率较低时其应力-应变曲线呈周期性波浪形，在应变速率较高时其应力-应变曲线则呈现较平滑稳定的态势；施加电场作用时抑制了这种周期波浪形变化，使应力-应变曲线呈平滑稳态变化。

This is directly related to the accumulation and elimination of electronic charge in the interface between ZnSe and electrode, which is accordance with the ρ〓-V curve.

晶体的C-V、I-V曲线反映了n-ZnSe半导体的电学特征。C-V、I-V曲线正向电压漂移与电极接触处电荷累积与耗尽有关，并在载流子浓度与电压的变化曲线上得到反映证实。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。