电弧

Moreover, arc characteristics on low voltage switches are analyzed, the physical process in the arc region is explained.

并且对低压开关电器的电弧特性进行了分析，阐述了电弧内部区域的物理过程。

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。

It has been found that the distribution of MIG arc spectrum along wavelength window shows spatial similarity. Amplitude fluctuations related to metal droplet transfer are also found in the dynamic signals of line spectrum.

对焊接电弧光谱进行的研究发现，MIG焊电弧光谱的分布表现出明显的空间相似性，谱线信号波形中含有与熔滴过渡有关的大幅度波动。

Through collection of TIG welding arc light spectrum of steel with disturbing factor,this paper studied the effect of disturbing factors such as rusty and various gas flow rate on the arc light spectrum distribution.Furthermore, the light radiation of different spectral zones was studied to get the spectral signals that could reflect the disturbing factors which were critical for online welding quality control.

通过对干扰因素下TIG焊电弧的光谱信息进行采集，研究了气流量变化、焊接试件表面存在锈等干扰因素对焊接过程电弧光谱分布的影响，并基于光谱分布的分析，进一步探讨了不同光谱谱段对干扰因素的反映，寻求实现焊接过程质量在线光谱测控的理论依据。

The study on spectrum analysis of arc sound signal has showed that a signature band of 5-10kHz of sound wave would be generated before fault s arc take place, which is strong in intensity and variable in both width and center depending on arcing electrodes, space between electrodes, and discharge volt age.

早期弧声的功率谱分析表明，故障电弧发生之前，在可听波段产生5kHz~10kHz的电弧声，其带宽和中心频率与电极形状、放电距离、放电电压等试验条件有关。

Arc plume emis— sion spectrum which fits the Planck blackbody radiation function by assuming T=4 350 K shows Swan band system of C2.The arc plasma temperature is about 4 300~4 400K,and the error is about 100K.

放电过程中的电弧等离子体光谱测试表明其中主要有C2分子的发射峰，光谱分布曲线与普朗克黑体辐射曲线中T=4 350 K的分布情况吻合，确定放电电弧等离子体温度约4 300~4 400k，测量误差约100 K。

A moving free interface is formed by interaction between welding arc and weld pool.

电弧与熔池的交互作用在两者之间形成了一个不断移动变化的自由界面，对界面的处理是实现电弧与熔池交互耦合的关键。

During plasma-arc keyhole welding, the physical process of keyhole effect and that of weld electric arc condition and influence each other.

小孔效应&的物理过程与电弧物理过程相互制约、相互影响，对电弧信息的分析可以清楚的掌握&小孔效应的变化规律。

We will achieve our objective by developing an integrated system that will continuously measure characteristics of the weld, the arc, and the metal transfer mechanism and use these data to adjust the weld current, voltage, speed, and arc concentration.

我们将通过开发一个集成的系统来实现我们的目标，这个系统将连续测量焊接性能、电弧和金属移位机制，并使用这些数据调整焊接电流、焊接电压、焊接速度和电弧密度。

Our Real-Time Robotic Control System for Titanium GMA W will consist of sensors for measuring characteristics of the weld, the arc, and the droplet formation and transfer and use these data to adjust the weld current, voltage, and speed.

我们用于钛合金气体金属电弧焊的实时机器人控制系统将由用于测量焊接特性、电弧、焊珠形成和移位的各种传感器组成，利用这些数据对焊接的电流、电压和速度进行调整。

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。