查询词典 circular arc

Many researchers have investigated the influence of AMF on vacuum arc. And most of them point out that uniformly distributed AMF is preferable. However, at higher current even under very uniform AMF, vacuum arc still tends to constrict, which will result in the failure of break. Further more, very strong uniform AMF has some disadvantages also.

非均匀纵向磁场对真空电弧控制机理的研究纵向磁场可以使真空电弧在大电流时维持在扩散态，减轻了电弧对阳极和阴极的烧蚀，从而提高了真空开关的极限电流开断能力，因此在真空开关领域得到了广泛的应用。

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。

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。

The results show that single power source twin-wire submerged arc welding, which is one of alternative methods of submerged arc welding with high deposition rate and low heat input, can meet manufacturing requirements of lange diameter full welding ball-valve.

结果表明，单电源双丝自动埋弧焊熔敷率高、热输入低，可满足大直径全焊接阀体球阀的制造要求。

The results showed that single power source twin-wire submerged arc welding, which is one of alternative methods of submerged arc welding with high deposition rate, low heat input, can cater for manufactural demands of big diametrical full welding ball-valve's manufacturing.

结果表明，单电源双丝自动埋弧焊熔敷率高、热输入低，可满足大直径全焊接阀体球阀的制造要求。

The experimental results show that with given two-wire submerged arc welding process, the low temperature toughness of the steel welds is good and the joint of medium thickness steel plant with twin-wire submerged arc welded technics can be used without heat treatment after welding.

该钢种中等厚度双丝埋弧焊焊接接头可以在不进行焊后热处理的情况下使用。

Lateral oscillation arc welding, high-speed-rotating arc welding, twin-wire welding, and ultra NGW can all assure the fusion of side wall and improve the oppearance of weld in relatively small welding variables.

横向摆动电弧、高速旋转电弧、双丝焊和超窄间隙焊4类方式都可以在较小的焊接规范下，保证侧壁熔合，改善焊缝成形，防止焊接裂纹。

Transition curve has often been used to connect line and circle arc, in order that the line can gradually change to circle arc, or vice versa.

摘 要 缓和曲线一般用来连接轨道交通工程的直线段与圆曲线段，以实现二者之间的平稳过渡，这在有关工程测量著作中已有详细叙述。

Transition curve has often been used to connect line and circle arc,in order that the line can gradually change to circle arc, or vice versa.

缓和曲线一般用来连接轨道交通工程的直线段与圆曲线段，以实现二者之间的平稳过渡，这在有关工程测量著作中已有详细叙述。

This article describes briefly process procedure and characters of 5 sets rolling tack welders for longitudinal submerged arc welding pipe unit,and introduces common defects during tack welding operation,such as air pocket,slag,arc burn,offset and misalignment etc.

简述了直缝埋弧焊管机组中五组压辊式预焊机的工艺过程及特点，介绍了预焊作业中常见的气孔、夹渣、烧穿、错边、焊偏等缺陷。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。