step joint是什么意思

用法例句

In t his article, through the introduce of usage of the prestressed concrete pile mec hanical bond express joint ,which is in the form of geared join , in one college of the Daxue City, it emphatic expounds the construction method, advantage and the problem in constructing of this joint.

本文通过对齿接合式快速接头预应力混凝土管桩在广州大学城某校区使用情况的介绍,重点阐述了这种接头的施工方法、优点及其在施工中存在问题。