名词
中文翻译：线长
同义词：
['line extender', 'line elongator']
例句：
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1. The line lengthener is used to extend the length of the cable.
线长延长器用于延长电缆的长度。
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2. The line lengthener was designed to improve the accuracy of the measurements.
线长延长器被设计用来提高测量的准确性。
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3. The line lengthener was a revolutionary tool in the field of electronics.
线长延长器是电子领域的一项革命性工具。