电弧

Based on the OpenGL technology, the virtual reality technology and Visual C++, the simulation and emulation of the manual metal arc welding process is realized in order to create a modern and slap-up training environment.

为创造现代化、高档次的培训环境，本文基于OpenGL技术，采用虚拟现实技术和Visual C++ 6.0编程环境实现了焊条电弧焊的虚拟焊接过程模拟与仿真。

Utilizng Jinchuang Corporation's waste slag and quartz sand as main raw materials and charred coal and charcoal as reducing agent, ferro-silicon alloy was reclaimed by mixed charging method in self-made DC arc furnace. The alloy was analysed by means of XRD and optical microscope.

利用金川公司的废渣和石英砂为主要原料，以焦碳和木炭作为还原剂，利用自制的小型直流电弧炉和混合加料法冶炼硅铁合金，并利用XRD和光学显微镜对合金进行了分析。

The persistence time of secondary arc directly reduces the possibility of successful single-pole autoreclosure .

潜供电弧的持续燃烧直接影响到单相自动重合闸的成功率。

Digital signal processor; relay; arc; data acquisition

数字信号处理器；继电器；电弧；数据采集

When heavy load is transmitted along a 750 kV transmission line, the connected shunt reactors can lead to big voltage decreasing, so transmitting capacity of line is limited greatly.

为解决线路传输能力与抑制过电压的矛盾，分析研究了并联电抗器在抑制750kV线路跳闸过电压、加速潜供电弧熄灭以及抑制合闸过电压等方面的作用，并由此提出了750kV线路保护与并联电抗器之间动作配合关系。

In this paper, arc spray molding technology was used to manufacture large size sheet forming mold successfully.

电铸与电弧喷涂相结合的模具制造方法提高了模具的性能，通过优化电铸工艺，电铸Ni-Co合金层硬度可达到HV600。

The cost of arc spray molding like this cars sheet forming mold not exceeds 28 thousand RMB, the cycle of manufacturing is 25 days, compared with formal steel sheet forming mold, the cost and manufacture cycle are decreased greatly.

本论文采用电弧喷涂工艺成功地制作了大型板料成型模，成本不超过2.8万人民币，制造周期为25天，与钢模相比，制造成本、周期都大幅度降低。

The results show that the aluminum coatings with seal coat are better sealed and can prevent the oxidation atmosphere pervasion into the inner coating .

结果表明，电弧喷涂铝涂层经封孔后，涂层的密封程度大大提高了，可以更好地阻挡或减缓氧化气氛向涂层内部的渗透，提高了涂层对基体的保护效果。

The results show that the aluminum coating s with seal coat are better sealed and can prevent the oxidation atmosphere pervasion into the inner coating.

采用电弧喷涂在Q235基体上制备了铝涂层，对涂层进行封孔处理，测试了封孔铝涂层在500℃空气中的抗高温氧化性能，并与Q235基体试样的抗高温氧化性能进行了对比。

The results show that aluminum coatings and aluminum coatings with seal coat can enhance the oxidation resistance of steel substrate under 500 ℃ in a short period. The aluminum coatings with seal coat have the best corrosion resisting property.

结果表明，在500 ℃以下，在Q235钢基体上电弧喷涂铝涂层和封孔铝涂层可以提高试样的抗氧化能力，但只是在短期内有效。

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。