安装方法

When using sorbitic extractors, try to teach and explain packing method.

在使用沙氏提取器时，应作试教，讲解安法。

For the features of force on the full steel heterotypical arch bridge,an easy and appropriate method is proposed for installation of the hanger rod by jacking the tie beam.

针对全钢异型拱桥的受力特点,提出一种简单适用的顶系安吊杆的施工法。