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Ask the switchboard operator for an outside line.
叫(电话)接线员接外线。
youdao
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This paper presents a structure of automatic switchboard of power line carrier equipment.
本文介绍了一种新的电力线载波机自动盘的结构。
youdao
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This paper presents a structure of automatic switchboard of power line carrier equipment.
本文介绍了一种新的电力线载波机自动盘的结构。
youdao