以下为句子列表：
英文: Sales and Marketing of Pre-Owned Helicopters and Turbine Aircraft. Engine and Aircraft parts Sales.
中文: 直升机和喷气式飞机的销售和市场推广，以及零件销售。
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英文: The application of brush electroplating for rapid restoring of scuffed surface of hard aluminum alloy aircraft parts is described. The technological process and parameter are discussed.
中文: 摘要研究了电刷镀技术在飞机铝合金零部件表面局部划伤修复中的应用，提出了电刷镀快速修复的工艺流程及工艺参数范围。
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