以下为句子列表：
英文: Argon serves as a shielding gas to protect metals from oxidation during welding. Inert gas welding is the preferred method of joining several ferrous and nonferrous alloys.
中文: 焊接中，氩作为保护气防止金属氧化。惰性气体焊接是连接几种含铁和不含铁的合金的首选方法。
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英文: Ningbo Minglian Gas Welding Machine Co.Ltd. having introduced advanced production technique and managements is adept at manufacturing high-quality gas welding machinery, cutting tool accessories, instruments, oxygen and medical apparatuses, and body safet
中文: 宁波铭联气焊机械有限公司引进先进生产技术及管理、专精于制造高品质之气体焊接、切割器具及附件、仪器、仪表、氧气医疗设备、人体防护产品等，产品行销东南亚、欧美等国家。
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英文: Operators conducting operation with fire danger like electrical welding and gas welding or operators for automatic fire control system, must hold relevant certificates and strictly observe operation rules on fire control safety.
中文: 进行电焊、气焊等具有火灾危险的作业的人员和自动消防系统的操作人员，必须持证上岗，并严格遵守消防安全操作规程。
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