采用焊道错位叠加方法，再现了螺旋管双面埋弧焊制管过程中内、外焊焊接热影响区(HAZ)的焊接热循环。
In this paper the HAZ weld thermal cycles of the welding by both sides submerged arc welded steel pipe were reproduced by the dislocation overlap weld method.
管道系统应该满焊。法兰除了在图纸上有明确的显示外，应该不使用。
Piping systems shall be all welded. Flanges shall not be used except as specifically shown on the drawings.
超声铝丝焊接机和超声金丝球焊接机主要运用于半导体生产后工序中芯片焊盘与外框架间引线的焊接。
Ultrasonic aluminum wire bonder and ultrasonic gold wire bonder are mainly applied to joint the chip pad with the lead-frame in the later process of semiconductor producing.
基于极限分析的观点，推导出面外弯矩作用下焊制三通的极限载荷估算公式。
Based on the limit analysis viewpoint, a formula that could be used to estimate the out-of-plane limit moment of welded branch pipe tee was derived in this paper.
焊钉、钢结构连接副、索具、桥梁、煤田、油井、风力发电塔基组合件、体育场馆双耳内（外）旋双向螺杆、锚具、钢丝绳！
Welding nails, steel connection pair, rigging, bridges, coal, oil, wind power tower base assembly, stadiums ears (and beyond) bi-directional rotation screw, anchor, rope!
研究了一种新型的水下焊接系统。系统中弧焊电源输出阶梯型的外特性，送丝系统采用脉动送丝方式。
A new type of underwater welding system is studied, which includes an oscillating wire feed system and a welding power source with staircase external characteristic.
最后利用该变换器研制出一最大输出为120a的弧焊电源，并给出了试验波形和电源的实测外特性波形。
At last, the arc-welding (which maxi output is 120a) by use of this converter is researched, and the experimental results and exterior character are also included in this paper.
品牌：进口外螺纹针型阀可配带不锈钢焊接管，能与管道直接对焊连接，也可通过外螺母拆卸阀门。
Germany RBT import external thread needle valve can be equipped with stainless steel welded pipe, and pipeline butt welding connection, but also through the outer nut removing the valve.
建立了软开关逆变弧焊电源的传递函数，设计了电源外特性控制电路，得到了较理想的电源外特性。
The transition function of soft switching inverter arc power is developed. The control circuit of outer character of the power is designed as well. And an ideal outer character is obtained.
建立了软开关逆变弧焊电源的传递函数，设计了电源外特性控制电路，得到了较理想的电源外特性。
The transition function of soft switching inverter arc power is developed. The control circuit of outer character of the power is designed as well.
焊连的外框和组装的风叶可选材质为喷漆、镀锌或不锈钢。
Fixed frame and blades of painted, galvanized or stainless steel.
焊连的外框和组装的风叶可选材质为喷漆、镀锌或不锈钢。
Fixed frame and blades of painted, galvanized or stainless steel.
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