名词
中文翻译：焊接缝
同义词：
['welding seam', 'soldering joint', 'soldering line']
例句：
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1. Thewelding seam was visible through the metal.
焊接缝通过金属可见。
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2.The soldering seam is weak and prone to cracking.
焊接缝弱且易开裂。
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3. The soldering seam was hidden beneath the paint.
焊接缝被油漆隐藏了。