查询词典 arc spectrum

Weld pool was illuminated with the radiation of continuous spectrum in a suitable window of arc light spectrum.

焊接过程的信息传感、模型化和反馈控制是保证焊接质量的三方面关键技术。

The research on TIG welding arc ultraviolet spectrum has been completed by using this system.

利用此系统对TIG焊电弧紫外光谱进行了研究，成功地获得了不同焊接规范下。。。

According to the results of comparison between these methods of spectrum evaluation, a new method of power spectrum evaluation of welding arc sound is advanced by means of association of wavelet packet analysis with the Welch average method .

对试验系统采集到的焊接电弧声进行了小波包多层分解，并利用周期图法、Welch 平均法及AR模型法，对各频段信号进行功率谱估计。根据不同谱估计方法的对比结果，提出小波包分解结合Welch 平均法对焊接电弧声进行功率谱估计的新方法。通过对几种规范与飞溅率下的电弧声功率谱的初步分析，发现其功率谱分布具有一定的规律性，并且不同频段谱峰值及其对应频率与焊接飞溅具有相关

The system not only can measure the outer and dynamic characteristics and static electric parameters, but also can measure three- phase power factor, input harmonic current and frequency spectrum, and efficiency of arc welding machine.

系统不仅具有测量外特性、动特性、静态参数、电焊机温升等传统电焊机测试台所有的功能，同时还可以测量三相功率因数、输入端电流谐波和频谱分析、弧焊电源效率的功能。

Grain boundary segregations of microelements Sn arc As in U74 heavy-rail steel after austeniized at 1200℃ then cooled at different colling rates were determined by means of Auger electron spectrum and X-ray surface analysis.

用Auger谱仪和X射线面扫描探测了U_(74)重轨钢在加热到1200℃奥氏体化以后再以不同冷速进行冷却的条件下微量元素Sn，As的偏聚情况。

Spectrometer was adopted to measure the emission spectrum of argon plasma jet at the ignitor exit; boltzmann curve slope method was applied to caculate the jet electron temperature; ionization equilibrium equation was used to caculate jet temperature and measured a law that length, electron temperature and jet temperature of ignitor exit jet length changed with arc current and flowrate.

采用光谱仪测量了氩气等离子体射流在点火器出口的发射光谱，利用玻尔兹曼曲线斜率法计算了射流的电子温度，并通过电离平衡方程计算了射流气体温度，测得了点火器出口射流的长度、电子温度和射流温度随弧电流以及流量的变化规律。

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。

Distribution features for TIG welding arc ultraviolet spec tr um associated with various of welding parameters have been acquired, and inform ations of welding arc ultraviolet spectrum also have been analyzed.

针对焊接电弧紫外光谱信息的研究，研制了一套焊接电弧紫外光谱计算机采集和处理系统。利用此系统对TIG焊电弧紫外光谱进行了研究，成功地获得了不同焊接规范下的电弧紫外光谱频谱分布特征，并对此进行了分析。

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。

Secondly, based on a lot of experiments, the method to obtain visual information during aluminum alloy pulse TIG welding is presented. According to the intensity and spectrum distribution of TIG arc of aluminum alloy, the composited wideband filter system were developed to overcome the arc disturbance to weld pool images.

通过大量的实验，探索了铝合金脉冲TIG焊条件下熔池视觉信息的获取方法，根据铝合金TIG焊弧光辐射的强度分布和光谱分布特点，利用熔池反射电弧光的低强度的连续光谱作为照明光源，设计了宽带复合滤光系统，克服了铝合金表面反射的高强度电弧光对熔池视觉信息的干扰。

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。