名词
中文翻译：背衬辊
同义词：
['backing roll', 'backing cylinder']
例句：
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1.The machine needs a new backing roll to keep running smoothly.
这台机器需要更换新的背衬辊才能顺畅运行。
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2.The engineer used the backing roll to smooth out the rough edges of the metal sheet.
工程师使用背衬辊来平滑金属板材的粗糙边缘。
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3. The backing roll is crucial for maintaining the quality of the printed material.
背衬辊对于保持印刷材料的质量和一致性至关重要。