The same catalogue included a type of two-pole concentric plug and socket.

相同的目录包括一种两极同心插头和插座。

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The utility model discloses a safety plug and socket.

本实用新型公开了一种安全插座与插头。

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The markings on the plug and socket have to be lined up.

插头和插座上的标记必须对齐。

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The court heard there were baby gates in place and plug socket covers along with coverings on table edges.

BBC: Shaun Binfield and Sally Dent

To find the energy hogs, you simply plug each appliance into the meter in turn, and then plug the meter into the wall socket and leave it switched on for a fixed time.

ECONOMIST: The much-talked-of smart grid prepares to enter the home

The pen has been designed to be compact and easy to use, you just plug it into a power socket and can start drawing anything within minutes.

FORBES: Get Ready to Doodle With The First 3D Drawing Pen