这些夹具是必不可少的，以确保最优质的焊接变形和焊接过程中最低。
These jigs are essential to ensure the best quality welds and the minimum of distortion during the welding process.
第二，也是最重要的一点，很多高强度铝合金不可使用惯用的技术焊接。
Second, and most importantly, many of the strongest aluminum alloys are not weldable using conventional techniques.
在低温下让钢铁焊接，这原本已是工地中最困难的工作，如今更是几近不可能。
They make working with steel, already the most difficult job on the site, nearly impossible.
冲压、焊接是白车身制造的两大不可或缺的工序。
Stamping and welding are indispensable processes in automobile body manufacturing.
由于镁合金不填丝的TIG焊接接头强度低，焊缝表面成型不好，所以，镁合金的填丝tig焊接方法不可避免。
Because TIG welded joints without filler wire always hold low strength and poor formation, tungsten inert gas welding process with filler wire is inevitable.
平面分段流水线是现代造船不可缺少的一种重要生产设施，包含先进的装配、焊接设备及作业流程。
Plane block production line is an important and indispensable facility in modern shipbuilding industry which includes advanced assembly and welding equipment and advanced production processes.
可见，激光焊接过程中产生的等离子体对激光焊接过程、焊接质量以及对激光能量的利用率有非常大的影响，是一个不可忽视的现象。
So the plasma has great effects on the laser beam welding process, the welding quality and the efficiency of the laser beam energy. Which can not be ignored during the laser beam welding.
3d打印之前，这将是一个不可能的形状，以铸造或焊接。
Before 3d printing, this would have been an impossible shape to cast or weld.
在长输管道工程施工中的关键是焊接过程，长输管道工程的施工质量好坏与焊接过程的质量控制是密不可分。
The key in long-distance pipeline construction is welding process, long-distance pipeline construction quality is inextricably linked with quality control of welding process.
焊接在工业中占有极其重要的地位，应用焊缝跟踪的传感器对保证焊接质量有着不可估量的作用。
The welding is a very important part in industry, so the sensor is used to seam track has available to assure the quality of the welding.
根据不均匀的焊接温度场和施焊时焊接构件的刚性条件，可以认为焊接残余变形和残余应力是不可避免的。
According to the asymmetry welding temperature fields and the rigidity of component when welding, we could think it is inevitable that welding would bring remains-strain and remains-stress.
在现代焊接生产中，焊接缺陷的出现都是不可避免的。
Welding defects is inevitable in modem welding manufacture especially in manual welding condition.
压力管道往往不可避免地存在焊接缺陷，这些缺陷的存在会降低管道的强度，对管道的安全运行产生隐患。
Welding defects inevitably exist in pressurized pipes used for transportation of oil and may cause safety problems as a result of decreasing the load-carrying capacity of the pipes.
手工焊接作为一种最基础的焊接方法，在当今的电子组装中仍然起着不可缺少的作用。
As the most basic welding method, manual welding still plays an important role in current electronic built-up.
随着电站设备中金属部件使用钢材种类的逐渐增多，不可避免地会遇到异种钢焊接的问题。
Dissimilar steel welding is inevitable with more and more types of steel being used for metallic parts in power station equipments.
激光焊接成型技术是现代工业生产中不可缺少的先进制造技术，它与传统的焊接方法相比具有优良的焊接性能。
Laser welding is an indispensable advanced manufacture technology in the modern production, and it has excellent welding performance compared with the conventional welding ways.
激光焊接成型技术是现代工业生产中不可缺少的先进制造技术，它与传统的焊接方法相比具有优良的焊接性能。
Laser welding is an indispensable advanced manufacture technology in the modern production, and it has excellent welding performance compared with the conventional welding ways.
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