steel spirally fluted tubes
steel spirally fluted tubes
钢制螺旋槽管
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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In order to resolve this problem, a detail study was carried out on using steel spirally fluted tubes replacing copper plain tubes without lowering the previous performance of heat transfer.
针对该问题，开展了用钢质螺旋槽管替代原有铜光滑管并使其达到原有换热性能的研究。
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