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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Figure 8 (Belay Device) ： ウィキペディア英語版 Figure 8 (Belay Device) The Figure 8 Belay Device is a piece of metal (usually an aluminum alloy) in the shape of an 8 with one large end and one small end. This device utilities a large surface area in contact with a climbing rope to provide sufficient friction along with proper technique to be used as a belaying device or for rappelling. A figure 8 (sometimes just referred to as an 8) is used in conjunction with a Climbing harness and locking carabiner to keep a climber safe and control their descent or ones own descent (when rappelling) ==Pros== Figure 8s offer a very smooth controlled descent when rappelling and lowering climbers.〔Cox, Steven M. and Kris Fulsaas, ed., ed. (2003-09). Mountaineering: The Freedom of the Hills (7 ed.). Seattle: The Mountaineers. ISBN 0-89886-828-9.〕 They can be used with nearly any diameter climbing rope and don't get as hot as other friction devices because of their ability to dissipate heat efficiently. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Figure 8 (Belay Device)」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.