迷宫式磨损环使低温液体二次循环损失减到最小。
LABYRINTH WEAR RINGS-Minimize recirculation losses of cryogenic liquids.
这种角度导致了攀岩者下降时，施加在快挂上的作用力更大，与绳子接触的那一段钩环也比其他的要磨损更严重。
This angle causes more force to be exerted against the carabiner as every climber is lowered, and this force causes the rope biner on the first draw to wear faster than other draws.
攀爬之前要观察并判断所有已经固定在路线上面的装备是否状态良好，包括膨胀钉和挂片，尤其是保护站和难点上，这些地方上的钩环使用频率最高，磨损也最为严重。
Visually and manually inspect all fixed gear before using it, including bolts and anchors, and especially those at stations and cruxes where the carabiners see maximum wear.
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