Premiering on July 20, the South Korean TV series W-Two Worlds interprets "W" as "double u"–double universe.

韩剧《W-两个世界》于7月20日首播，在剧中，W可理解为“两个u”——两个平行世界。

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Vertical heat exchanger is mainly divided into single U-tube heat exchanger and double U-tube heat exchanger.

垂直U型管换热器主要分为两种：单u型管换热器和双u型管换热器。

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This paper analyzed the energy consumption of a system in operation status——the double U-tubes vertically buried tube ground-source heat pump system in an air force station of Chongqing.

基于重庆市某空军场站的双U管竖埋式土壤源热泵系统工程，对该系统冬季变工况下的运行能耗进行了分析。

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Senator John Barrasso, from the western state of Wyoming, says Republicans support a comprehensive plan to double the U.S.investment in energy research.

VOA: standard.2009.05.23

The Obama administration has already promised to double the non-military U.S.foreign aid budget to $50 billion a year by 2012 and Clinton's speech offered no new commitments.

VOA: standard.2010.01.06

Avraham Tzion,an Israeli expert in international law, says the U.N.has a double standard.

VOA: standard.2009.10.23

Locke says Commerce is working on an administration goal to double U.S. exports over the next five years.

FORBES: CES: Commerce Secretary Gary Locke Meets The Media

In Double U's early years, Felton Williams accepted or pursued artists from across the region's diverse musical spectrum.

NPR: 'Downriver Revival': Documenting The Double U

Double U's last recording was in 1981, but Williams kept almost everything more than 300 reels of tape.

NPR: 'Downriver Revival': Documenting The Double U