名词
中文翻译：焊接背衬
同义词：
['backing plate', 'backing strip', 'support plate']
例句：
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1.The welder used a special backing material to ensure the joint was strong.
焊工使用了一种特殊的背衬材料，以确保焊缝牢固。
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2. The engineer designed the backing system to provide optimal support for the structure.
工程师设计了背衬系统，为结构提供最佳的支撑。
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3. The welding process requires careful handling of the backing material to avoid damaging it.
焊接过程需要小心处理背衬材料，以免损坏它。