以下为句子列表：
英文: This series welding machine integrate the characteristics of alternating/direct argon arc welding and hand welding. It is an internationally advanced multifunctional and multipurpose welding torch.
中文: 本系列焊机集交流/直流氩弧焊、交流/直流手工焊于一体，是一种具有国际先进水平的多功能、多用途焊机。
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英文: This series welding machine integrates the characteristics of alternating(impulse)/direct (impulse) argon arc welding and hand welding. It is an international advanced multifunction and multipurpose welding torch.
中文: 本系列焊机集交流（脉冲）/直流（脉冲）氩弧焊、交流/直流手工焊于一体，一机多用，是一种具有国际先进水平的多功能、多用途焊机。
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英文: ZT-B series welding type vacuum flow regulating valve fulfills the flow adjustment purpose by changing the size of the pipeline inner sectional area.
中文: ZT－B型系列焊接式真空流量调节阀是改变管道内截面积大小达到调节流量目的。适用溴化理冷热机组管道。
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