natural channel control的意思|示意

It is probably the ultimate channel for bringing the scourge of sand under permanent control to change from artificial vegetation to natural vegetation as soon as possible.

人工植被尽快向大面积天然植被过度，也许是根治沙害的终极途径。

As for the water resources from the surface water and natural raining, it is mainly to grout and seal the water conducted channel. Good water prevention and control results ware obtained.

对于水源主要来自地表水和大气降雨的，对主要导水通道进行注浆封堵，可以取得很好防治水效果。

Slit is an excellent channel for noise transmission, while a natural enemy of noise control.

缝隙是噪音传播的良好通道，是噪音治理的天敌。