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

过隧道时，反煤灰灌进驾驶室。

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.

在台阶度一定条件下,单台阶燃烧室具有更好燃烧性能。