It's easy and useful to control dust and gas with wind-cloth curtains in the bringing back long wall face.
走向长壁后退式开采工作面用风帘控制粉尘和瓦斯简单易行，能够解决生产中的实际问题。
In all that time, Ruha learned only how to make a wall from wind and dust.
那么长的时间了露哈只学会了如何用风和沙造出一堵障蔽。
The wind dust-controlling wall dust-controlling effect or shielding effect depends on the characteristics of wind network flow length and speed.
“防风抑尘墙”的抑尘效果或屏蔽作用取决于防风网尾流区的特征长度和风速。
The wind dust-controlling wall dust-controlling effect or shielding effect depends on the characteristics of wind network flow length and speed.
“防风抑尘墙”的抑尘效果或屏蔽作用取决于防风网尾流区的特征长度和风速。
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