The underlying surface conditions of Loess plateau area have been changing great because of human activity, which results in affecting the features of producing run-off and conveying sand.
在人类活动的影响下，黄土高原地区的下垫面条件发生了很大变化，这种变化影响了流域的产流输沙特性。
The conveying belt type filter device is convenient and safe and can completely remove the filter residue on the filter screen surface.
本过滤装置可方便、安全、彻底地清除滤网网面上的滤渣。
The conveying belt type filter device is convenient and safe and can completely remove the filter residue on the filter screen surface.
本过滤装置可方便、安全、彻底地清除滤网网面上的滤渣。
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