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

第二类为直升式云梯车，其形式共区分为5种组合。

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

一个声调格局中一般曲折调最长，平调和升调次之，降调最短。