波形的

Waveform of main state variables in dynamic process of CO2 arc welding is given by simulation.

通过系统仿真定量地研究了CO2电弧焊动态过程，给出了负载电压、焊接电流随时间变化的仿真波形和短路过渡型CO2电弧焊系统的相平面图。

In the end, the waveform and value of electrical potential of winding and armature reaction property curve are gained through electromagnet field calculation, and compare it with the calculation result.

最后，对谐波励磁同步发电机的负载运行进行了计算，得到了基波绕组和谐波绕组的电压大小和波形以及电枢反应特性曲线。

Although it seemed straightforward to designate a bar code line for each significant transition in the waveform, it is in fact a sophisticated calculation that is required.

尽管对波形图中每个明显的过渡设计一个条形码线看起来似乎简单直观，但这是一种必须的先进计算方法。

The spalling in the concrete is detected by examining the profile of the transmitted pulse in the buffer bar.

按照一维特征线理论，可以由吸收杆上的应变波形确定出混凝土材料的层裂强度。

Since the polymer bar material has a lower mechanical impedance than the concrete specimen, spalling can be produced in the concrete rod after the compressive wave in the concrete specimen is reflected back as a tension wave at the concrete/buffer bar interface.

由于波在粘弹性材料中的弥散效应，吸收杆中透射波形会发生变化，但三维有限元分析表明，在利用吸收杆上透射波确定混凝土层裂强度时弥散产生的影响可以忽略。

A polymeric buffer bar is employed to replace the conventional metallic transmission bar in a split Hopkinson pressure bar to determine the spalling strength of a long concrete rod that is placed between the metallic incident bar and the polymer buffer bar.

提出了利用Hopkionson压杆测量混凝土层裂强度的新实验方法：用高聚物材料取代传统的金属材料透射杆，混凝土试件为细长杆，由于高聚物波阻抗比混凝土小，试件中压缩波在试件／吸收杆界面反射后形成拉伸波使试件产生层裂破坏，通过吸收杆上透射波形可以确定混凝土层裂强度。

Through investigation and analysis to several wells with CBL VDL and CCL. it is found that there are different characteristics in well logging images for the joint parts of API casing with buttress thread coupling, casing with special thread coupling and connecting casing with special thread. Abnormal CCL and CBL curves and VDL waveforms indicate casing failure position and damage pattern.

经过对多口井CBL、VDL和CCL套管测井结果进行了调查研究和分析，发现API接箍式偏梯形螺纹接头套管、接箍式特殊螺纹接头套管和直连型特殊螺纹接头套管接头部位在测井图像中均有不同各自的特征，不正常的CCL和CBL曲线和VDL波形位置表明了套管损坏位置和损坏形式。

A composite cascade multilevel converter composed of a main converter and an accessorial one is presented which is well suited for application in high voltage situations with high performance requirements.

针对高电压、高性能功率变换场合的需要，提出了一种主从组合式多电平变换器的拓扑组合结构，具有输出波形质量高、输出电压等级高和功率转换效率高等特点。

The photosensitivity and spectral responsiveness of cotton bollworm moth, Helicoverpa armigera were determined by an electrophysiological technique of electroretinogram extracellular recording method. The main results were as follows:(1) different monochromatic light within U.

运用视网膜电位（Electroretinogram， ERG）技术研究了棉铃虫［ Helicoverpa armigera］成虫在暗适应过程中对单色光和复合光刺激的光感受性变化，并初步分析了ERG 的波形成分组成及影响因素。

By virtue of bifurcation diagrams, Poincaré maps, orbits, time histories and frequency spectrum diagrams, the nonlinear dynamic responses of the generator rotor and hydraulic turbine rotor with coupling faults were analyzed. The results confirmed rich nonlinear motions such as periodic motion and quasi-periods with different values of parallel misalignment and declination. Moreover, the process of rub-impact is so complex that many low frequencies with large amplitude are in the range of

通过分岔图、Poincaré截面图、轴心轨迹图、时域波形图和幅值谱图系统地分析了发电机转子与水轮机转子在耦合故障下非线性动力学响应，发现机组转子系统随不对中平行量和偏角变化存在周期运动和复杂的拟周期，其碰摩过程非常复杂，机组故障特征频率除主要在1倍频外，还在0.3~0.4倍频处存在幅值较大的谐波分量。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。