In 2007, a Russian expedition descended in a pair of vessels more than two miles under the ice cap and deposited a Russian flag on the seabed at the North Pole.
2007年，一支俄罗斯探险队在北极用两艘潜水器潜到了两英里之下的冰层，并在海底放置了俄罗斯国旗。
This is really a pole-zero pair.
旁路电容是个真正的极零对。
Other CARDS, such as the Model 7700 20-channel Differential Multiplexer Module, use latching relays, and the offset voltage is the same whether the poles are used as a single pole or as a pair.
其它开关卡，例如7700型20通道差分复用模块，采用的是闭锁型继电器，无论是成对还是单独使用一个闸刀，偏移电压都是相同的。
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