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。
It's easy and useful to control dust and gas with wind-cloth curtains in the bringing back long wall face.
防水布与水袋配合而成的隔热水墙帘面与大轴连接。
The thermal insulation water wall blind formed by waterproof cloth and water bag is connected to the main axle.
防水布与水袋配合而成的隔热水墙帘面与大轴连接。
The thermal insulation water wall blind formed by waterproof cloth and water bag is connected to the main axle.
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