展会时间:2013-08-19 至 2013-08-21
我国是一个灾害频繁发生、灾害损失巨大的国家。四川是我国地质灾害最为严重的省份之一。地质灾害点多面广,全省174个地质灾害易发县(市、区)已查明各类地质灾 ...
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