求翻译：焊接过程中，工件和焊料熔化形成熔融区域，熔池冷却凝固后便形成材料之间的连接。这一过程中，通常还需要施加压力。焊接的能量来源有很多种，包括气体焰、电弧、激光、电子束、摩擦和超声波等。19世纪末之前，唯一的焊接工艺是铁匠沿用了数百年的金属锻焊。最早的现代焊接技术出现在19世纪末，先是弧焊和氧燃气焊，稍后出现了电阻焊。20世纪早期，随着第一次和第二次世界大战开战，对军用器材廉价可靠的连接方法需求极大，故促进了焊接技术的发展。今天，随着焊接机器人在工业应用中的广泛应用，研究人员仍在深入研究焊接的本质，继续开发新的焊接方法，以进一步提高焊接质量。是什么意思？

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Workpiece welding process, and solder melting a molten zone, cooling gel concentrate melting Reverberatory dust collecting after the connection between forming material. This process, it is also often necessary to apply pressure. Solder the energy source in a wide variety of ways, including gas flam

In the welding process, the work piece and the solder melting forms fuses the region, after molten bath cooling coagulates then forms between the material the connection.In this process, usually also needs to exert the pressure.The welding energy origin has very many kinds, including gas flame, elec

During the welding process, the workpiece and the solder melts forming molten region, between forming materials after cooling and solidification of molten pool connections. In this process, typically also need to exert pressure. Weld many kinds of energy sources, including a gas flame, electric arc,

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