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OSC-I→MAIN-O 插损为2.5db;LINE-I→MAIN-O插损为2.5db OSC-I→MAIN-O 插损为5.5db;LINE-I→MAIN-O插损为2.5db OSC-I→MAIN-O 插损为5.5db;LINE-I→MAIN-O插损为5.5db OSC-I→MAIN-O 插损为2.5db;LINE-I→MAIN-O插损为5.5db
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LINE_O LINE_I MAIN_D MAIN_A