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1. The engineer used a level adjusting attenuator to fine-tune the signal strength for better reception.
工程师使用一个水平调节衰减器来微调信号强度，以获得更好的接收效果。
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2. During the test, the technician adjusted the level adjusting attenuator to ensure optimal performance of the equipment.
在测试期间，技术员调整了水平调节衰减器，以确保设备的最佳性能。
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3.The engineer had to replace the level adjusting attenuator due to its failure, which affected the overall system stability.
由于水平调节衰减器的故障，工程师不得不更换它，这影响了整个系统的稳定性。