permanent lining是什么意思

用法例句

The application of GRC permanent model in simple-prop beams;

GRC永久模板在简支梁上的应用

The permanent antifloating anchored pile is used to control the settlement of building foundation.

永久性抗浮锚桩的施工目的是为了解决建筑物整体抗浮问题。

With the implementation of the policies about energy efficiency in buildings,a sort of permanent block as forms with lightweight aggregate concrete was developed.

适应建筑节能等政策的要求,研制了一种轻骨料混凝土永久性砌模。