木制部件的分层或腐烂，如地板老化，包括膨胀、收缩或因正常使用所导致的起翘；
Delimitation or rot of wooden components, such as general deterioration of floors, including expansion, shrinkage or warping arising out of normal use.
有机类保温材料主要来源于石油副产品，包括膨胀聚苯板(EPS)、挤塑聚苯板(XPS)、聚氨酯喷涂(SPU)以及聚苯颗粒等。
Organic kind of heat preservation material mainly comes from oil byproducts, including EPS (EPS), extruded polystyrene (XPS), polyurethane coating (SPU) and polystyrene particle etc.
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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