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1.The engineer designed a duplicate recoiler to improve the efficiency of the machine.
工程师设计了一个复制式回弹器来提高机器的效率。
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2. The duplicate recoiler was used in the testing process to simulate real-world conditions.
复制式回弹器被用于测试过程中，以模拟实际条件。
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3.The engineer explained that the duplicate recoiler could help reduce the wear and tear on the machine.
工程师解释说，复制式回弹器可以帮助减少机器的磨损和损耗。