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Digestive systemNode simplifies the problem by starting to create exports objects during a module load. If it needs to introduce other modules and has circular dependencies, it can only be partially introduced, that is, only the part defined before the circular dependencies occur can be introduced.In the traditional subway construction, collision inspection can only be implemented after the design drawings of various specialties are summarized, which is time-consuming and labor-consuming and affects the project progress. Using BIM technology, collision inspection can be carried out on the pipelines of the building before construction, clearance and pipeline arrangement scheme can be optimized, hard collision can be eliminated and soft collision can be avoided as much as possible, and error loss and rework can be reduced.你去准备，我先跟爹娘说一声，大姐陪你去。“第一次”是“无论多少次”——。