以下为句子列表：
英文: Arc welding technologies in Japan have been advanced steadily since the time when an application of covered electrodes was first examined in the shipbuilding industry about 90 years ago.The history of the arc welding technology has always been the history
中文: 90年前,日本的造船业开始使用药皮焊条.自此,日本的弧焊技术取得了长足进步.弧焊技术的历史是焊接工艺高速度、高效率的历史.自药皮焊条开始焊接材料已发展成为更高效的埋弧焊焊材和气保焊焊材,并能更容易地结合自动化焊接和机器人焊接.气保焊焊材主要分为实芯焊丝和药芯焊丝,药芯焊丝的应用因其出色的实用性和效率而逐年增加.介绍了药芯焊丝作为主要焊材的发展趋势,尤其是在碳钢焊接上的应用.
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英文: In this paper, it has been studied by the slope - controlled SCR rectifier that external characteristic of welder relate to arc digging action and the strong arc force of arc welding power source in manual arc welding formed.
中文: 利用一种特制的变结构可控硅整流焊机，研究不同焊机外特性对电弧穿透力的影响；探讨了手工电弧焊强电弧力形成机理；并且指出正确设计电源外特性，是获得较强电弧穿透力的途径。
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英文: It matches international well-known argon-arc welding machine and welding torch cooling system, guaranteeing long-term continuous production.
中文: 配备的国际知名品牌氩弧焊机及及焊枪冷却装置，可保障生产的长期持续进行。
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英文: Its monthly production capacity for iron frame &fork of argon arc welding are 280,000 sets, for aluminum alloy frame &fork are 200,000 sets.
中文: 企业拥有强大的技术开发实力，可承担各类自行车和电动产品的设计以满足客户提出的各种要求。
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英文: Summary by reformming exist bury arc welding machine, current rang of welding machine is changed, it absolved small batch-process by thin and thick welding parts, promote efficiency, save the money and extend scope of application of welding machine.
中文: 通过对现有埋弧焊机改造，使焊机的电流调节范围改变，解决了小批量超厚超薄件的生产，提高了效率，节省了开支，扩大了焊机的适用范围。
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