connection of welding seam
connection of welding seam
焊缝连接
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The structure of the vacuum cup adopts self-locking connection mode, thereby having no welding seam and overall aesthetic property; moreover, the handle is firmly arranged without sloshing.
这种保温杯的结构采用自锁配连接方式，无焊缝，整体美观，手柄稳定牢固无晃动。
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