千赫
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千赫（Kilo Hertz，kHz）是波動頻率單位之一，旧称“千周”（Kilocycle，kc）。波動頻率的基本單位是赫茲，採千進位制，1千赫相當於1000赫茲，在電磁波裡，頻率為一千赫電的電磁波波長相當於300公里。
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The Dalles, Oregon
The Dalles, Oregon From Wikipedia, the free encyclopedia Jump to navigation Jump to search This article is about the city in Oregon. For the nearby geological formation, see Celilo Falls. For other uses, see Dalles. Not to be confused with the town of Dallas, Oregon. City in Wasco County The Dalles City The Dalles and the Columbia River in November 2008 Flag Seal Motto(s): "Cognito timor Vincit" (Latin), "Knowledge Conquers Fear" (English) Location in Oregon Coordinates: 45°36′4″N 121°10′58″W / 45.60111°N 121.18278°W / 45.60111; -121.18278 Coordinates: 45°36′4″N 121°10′58″W / 45.60111°N 121.18278°W / 45.60111; -121.18278 County Wasco County Incorporated 1857 Government • Mayor Stephen Elliott Lawrence (D) [1] [2] Area [3] • Total 6.61 sq mi (17.12 km 2 ) • Land 6.35 sq mi (16.45 km 2 ) • Water 0.26 sq mi (0.67 km 2 ) Elevation 109 ft (33 m) Population (2010) [4] • Total 13,620 • Estimate (2013) [5]
