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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.如雪见状，跟了上去，喊道：三爷，我跟你一起走。　　The 4 different poles — Nick (Pon), Wan (Mo), Beam (Patricia), and Wayu (Godt) — continuously circle around each other, repeatedly clashing and burning in the fire of the collision.该剧讲述距公诉时效仅剩10天之际，想埋藏秘密和想揭发真相的人展开殊死搏斗的故事。　　你可以看到，中情局特工Rick Martinez（Freddy Rodriguez）在人迹罕至的沙漠地区被一群反政府武装分子包围。为了表示自己「足够强悍」，他一口气吞下了一只蝎子……汤米和他的妹妹琼斯独居在家族牧场，突然发现自己受到一对游牧杀手的恐怖袭击和猎杀1. Columns of command mode