搜索结果: 1-1 共查到“地球科学总论 public expenditures”相关记录1条 . 查询时间(0.215 秒)
The net benefit of public expenditures on avalanche defence structures in the municipality of Davos,Switzerland
net benefit public expenditures avalanche defence structures municipality of Davos
2009/12/28
Avalanches pose a threat to settlements as well as industrial and recreational areas in the Alps. As a counter measure, technical mitigation measures have been implemented since the 19th century, resu...