| 单词 | jumar |
| 释义 | jumar Mountaineering.|ˈdʒuːmə(r)|
[Swiss name.]
A clip which when attached to a fixed rope automatically tightens when weight is applied and relaxes when it is removed, thus facilitating the climbing of the rope; also, a climb using jumars. Hence as v. intr., to climb with the aid of jumars; ˈjumaring vbl. n., the action of so doing.
1966Climbers' Club Jrnl. 77 Somebody spotted him dangling from his Jumars, half-way down one of the fixed ropes. 1968P. Crew Encycl. Dict. Mountaineering 73/1 Jumars are the most effective device for prusiking, but they have the disadvantage of not working well on iced ropes. 1969Sunday Times (Colour Suppl.) 16 Feb. 38/3, I dreamed that I was on the ropes setting off for the summit by myself and I was jumaring all night without getting anywhere. 1971C. Bonington Annapurna South Face viii. 90 Once the ropes are in place, the climbers no longer move roped together, but simply clip onto the rope, using on the upward sections a device called a jumar clamp. This is a metal handle, with a knurled lever which is fitted over the rope. It works on a ratchet principle, sliding easily up the rope, but biting into it when put under tension. Ibid. xi. 125 This was the first time that this type of free jumaring had ever been necessary at this altitude in the Himalayas. 1971D. Haston in Ibid. xvii. 214 The sun was two hours away from the gully when we started the upward jumar. 1972― In High Places 2 Onward, outward, creeping on jumars and rimed ropes. It is cold... Dachstein-mitted hands freeze in jumar clutch. Ibid. ix. 104 The hook fitted, a quick move, and I was up. Mick jumared and I pushed on again. 1973C. Bonington Next Horizon ix. 141 Later, I learned that an essential precaution for any jumaring is to tie a knot in the rope, so that if the jumars do slip on the rope, you don't slide straight off the end. |
英语词典包含277258条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。
相关内容11：
相关热词搜索：jumar英英词典英英释义英语词汇意思用法释义英语
字词 表观蠕变 释义 【化】 apparent creep 汉译英翻译词典收录405719条汉英翻译词条，基本涵......
单词 julip 释义 Seejulipe 英语词典包含277258条英英释义在线翻译词条，基本涵盖了全部常用单......
字词 表观系数 释义 【机】 apparent coefficient 汉译英翻译词典收录405719条汉英翻译词条，......
单词 werrei 释义 werreivar. werray v. Obs.{var l=document.getElementsByTagName("link");var......
单词 werre 释义 ▪ I. werrevariant of vere Obs. spring-time.1436Libel Eng. Policy in Pol. ......
字词 表观组成 释义 【化】 apparent composition 汉译英翻译词典收录405719条汉英翻译词条，......