名词短语
中文翻译：从属线路系列
同义词：
['Subordinate lines', 'Subordinate series']
例句：
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1.The subordinate line series is a crucial component of the communication system.
从属线路系列是通信系统的关键组成部分。
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2.The subordinate line series was designed to improve the signal strength in the area.
从属线路系列被设计来改善该区域的信道强度。
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3. The subordinate line series was used to connect different parts of the network.
从属线路系列用于连接网络的不同部分。