Found in articles
turbine）風機或Gorlov風機。 1919年，德國物理學家貝茲（英语：Albert Betz）認為，不管如何設計渦輪，風機最多只能提取風中59%的能量，此稱為貝茲極限定律（英语：Betz's law）（Betz Limit）。現今正在運作的風力發電機所能達到的極限約為40%。大多數風力發電機實際效率範圍從20%到40%。
Betz, Hans-Georg; Immerfall, Stefan. The new politics of the Right: neo-Populist parties and movements in established democracies. St. Martinʼs Press
Lachenmann; Rüdiger Wolfrum, The Law of Armed Conflict and the Use of Force: The Max Planck Encyclopedia of Public International Law, Oxford University Press:
nl. [2009-01-11]. （原始内容存档于2007-09-27）. The Avalon Project : Documents in Law, History and Diplomacy. Yale.edu. [2009-01-11]. （原始内容存档于2016-04-21）. Hermann
Supreme Court Research Guide. law.georgetown.edu. Georgetown Law Library. [2012-08-22]. （原始内容存档于2012-08-22）. How to Cite Cases: U.S. Supreme Court Decisions