求翻译：所有油漆、面砖的色彩事前做出样板，经建设单位及设计单位确定后，方能大面积施工，所有隐蔽工程完工后，经质检部门验收合格后才能进行面层覆盖。是什么意思？

The color of paint, tile in advance to make the model, determined by the construction unit and design unit in order a large area of ​​construction, after the completion of all concealed work, the acceptance by the quality inspection department to the surface coverage.

All paints, tiles prior to the color model, the construction and design unit, to a large construction, all hidden after the project is completed by the department in charge of quality assurance, acceptance to top cover.

All paint, the face brick color made the model in anticipation, determined after the construction unit and the designing department, Fang Nengda the area construction, after all concealed works finished, approved qualified after the quality testing department can carry on the surface layer cover.

Color model in advance of all paint, tile, construction and design is finalized, construction of large area, all hidden upon completion of works, after acceptance by the quality control Department for surface covering.

正在翻译，请等待...