在大型钢铁联合企业中，炼钢车间施工安装测量，是在厂房位置定点和高程控制纲的基础上进行的。此项测量不仅要求迅速，而且底座的基础精度需要极高。 In the large-scale iron and steel conglomerates, the construction and installation of steel-making workshops are measured on the basis of the fixed-point and elevation control classes of the plant location. This measurement is not only demanding, but also the basic accuracy of the base is extremely high.