main construction的用法和樣例：
例句
- Throughout the main part of the project each group is asked to maintain a diary of progress made.
在工程的主體施工期間，各組必須保存進度日記。 - The integral steel platform formwork system is a new kind of formwork system to adapt the construction need of super high buildings.
摘要整體鋼平台模板體系是適應超高層建築主體施工需要的新型模板體系，在我國有廣泛的應用前景。
