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与语音分线盒用一条两芯线连接。
Connect the voice junction box through one two-core wire.
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用于信号汇总管理分流操作的分线盒。
Summary for the management of shunt operation signal junction box.
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用于信号汇总管理分流操作的分线盒。
Summary for the management of shunt operation signal junction box.
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