大量小煤矿关闭后形成的积水，使得水害治理难度加大，严重威胁着矿井安全。
Because massive small coal mine closure, causes the difficulty of mine water-proof to enlarge and threatens badly mine security.
后人记载，禹治理水害是从岷江开始的。
Later records, Yu governance from the Minjiang water damage are the beginning.
后人记载，禹治理水害是从岷江开始的。
Later records, Yu governance from the Minjiang water damage are the beginning.
应用推荐