护壁

There was a low protecting wall to knock down the heat blasting from the pit of the furnace.

有低矮的护壁挡住从炉膛里喷出的火焰。

The practice of subterrene drilling indicates that this method not only adapts to geothermal well, but also is a new pipeless reinforcement method to be applied widely.

热熔钻进的实践证明，该方法不仅适用于地热钻井，而且也可以为种新的无套管护壁方法推广应用。