1.The other one is the assurgent ladder truck including 5 different angle combinations.

1.第二类为直升式云梯车，其形式为5种不同角度组合。

2.Aclinic tone and assurgent tone take second place.Katabatic tone is always the shortest tone.

2.调格局中般曲折调最长，平调和升调次之，降调最短。