电弧

The use of filter vacuum arc cathode plating nano-technology production of amorphous diamond films can achieve the thinnest 2 nanotechnology, diamond structure SP3 in more than 80 percent.

利用滤质阴极真空电弧镀技术生产的纳米级非晶金刚石薄膜最薄可以达到2纳米，金刚石结构SP3的含量超过80％。

The twin-wire indirect arc gas-shielded welding is a new welding technology.

双丝间接电弧气体保护焊是一种新的焊接工艺。

Because of the difference of arc circuit, the welding process of twin-wire indirect arc gas shielded welding is more stable than single wire welding.

双丝间接电弧气体保护焊是一种新的焊接方法。

Based on the experiment of twin-wire narrow gap welding in single pool mode by employing alternative pulsed arcs, the influences of welding parameters on the appearance of weld and welding process stability were investigated.

采用交替脉冲，对双丝共熔池窄间隙焊进行工艺试验，研究了焊接参数对焊缝成形和电弧稳定性的影响。

The metal transfer and the conrresponding arc voltage and welding current in twin-wire indirect arc argon welding was investigated with high speed camera system based on a xenon lamp source and digital oscillogragh.

采用氙灯背光高速摄像系统及示波器对双丝间接电弧氩气保护焊的熔滴过渡及其对应的电压、电流波形进行了研究。

On the basic of the reference,aimed at high basicity agglomerated flux ,the relation of the parameters including the current,voltage and welding speed,the position of the twin-wire and its space,the heat input and the form of groove was systemically analyzed by the overlaying o.

在参考相关文献的基础上，针对高强钢用高碱度烧结焊剂，通过在平板表面堆焊和V型坡口对接板试验，系统分析了焊接电流、电弧电压、焊接速度、双丝位置组合及间距、线能量、坡口形式等与焊道成形的关系。

The hollow-axis motor drives the offset nozzle and rotates the arc on the tip of wire at high speed,so as to ensure enough penetration into the sidewalls in narrow gap welding .

在该系统中，焊丝穿过电机的空心轴后从导电嘴的偏心孔送出，电机带动导电杆和偏心导电嘴旋转，从而使焊丝端部的电弧以一定直径高速旋转，以保证窄间隙焊接接头具有足够的侧壁熔深。

On-load Tap technical requirements is to select switch, switch contact surface is smooth, elastic enough to reach good, unobstructed card, arc burns, and excessive wear and tear.

有载分接开关技术要求是选择开关、切换开关触头表面光滑，弹力充足，接触良好，无阻卡、电弧烧伤及过量磨损现象。

According the result of experiment, the air pressure have effect on flashover voltage, the relationship of the flashover voltage and the number of insulator is linearity, and the change of potential distributing after insulator iced is the main reason why the outer insulation characteristic of iced insulator string declined.

试验研究结果表明，气压对覆冰绝缘子长串的闪络电压影响的特征指数与污秽绝缘子一致，覆冰可认为是一种特殊的污秽形式；在试验研究的串长范围内，闪络电压与串长成线性关系；绝缘子串覆冰以后的电位分布的变化是覆冰绝缘子串外绝缘特性下降的主要原因，但覆冰绝缘子串的局部电弧发展成完全闪络所需的时间比污秽绝缘子长，且受冰层的融化和冰凌状态的影响严重。

Urban rail transit ; Power polar ; Spark discharge ; Arc discharge ; Off-line ; Discharge mechanism

城市轨道交通；电源极性；火花放电；电弧放电；离线；放电机理

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。