backwind

In tunnels, a lashing backwind fills the cab with soot.

过隧道时，反向风把煤灰灌进驾驶室。

Furthermore, as the total step height is the same, the combustor configuration with one backwind step has higher performance than the combustor configuration with two backwind step.

在台阶高度一定条件下,单台阶燃室有好燃性能。