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我们不得不拆开发动机修理机器。
年轻的亨利没有留在农场，承传父业，而是离家去了底特律，成为了一名发动机修理工。
Instead of working on the family farm, young Henry went off to Detroit and became an engine-repairer.
采用激光熔焊方法，修复了高压涡轮工作叶片叶尖裂纹，有效降低了发动机修理成本，提高了发动机修理的经济效益。
The blade tip crack of the high pressure turbine is repaired by using the laser welding, which can reduce effectively the repair cost and increase the economic effectiveness of the engine repair.
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