名词
中文翻译：Unknown
同义词：
['tuning', 'adjustment']
例句：
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1. The engineer made a line tuning to improve the signal quality.
工程师进行了线路调整以提高信号质量。
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2. During the test, we need to make sure the line tuning is correct.
在测试期间，我们需要确保线路调整是正确的。
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3. The technician adjusted the line tuning to ensure smooth communication.
技术人员调整了线路调谐以确保通信顺畅。