您要查找的是不是：
- X65级钢管X65 grade steel pipe
- X65级钢X65 grade steel
- X65级管线钢X65 grade pipeline steel
- X80级钢管X80 grade steel pipe
- L245A级钢管L245A-pipe
- JP级钢管磷化的研究PHOSPHATIZATION OF JP GRADE STEEL TUBE
- X65钢X65
- 他将望远镜收进一根钢管内。He slipped the telescope into a steel tube.
- X65钢级直缝埋弧焊管X65 grade LSAW pipe
- 六级英语English Band 6
- 薄钢管sheet steel pipe
- 八级风force 8 wind
- 薄壁钢管thin-wall steel tube
- 百万吨级megaton
- 玛钢管malleable iron pipe
- G级各种年龄段的观众都可观看的电影A movie rating that allows admission to persons of all ages.
- 包黄麻钢管jute-covered steel pipe
- 企业级enterprise-level; business-level
- 玛钢管件malleable cast iron pipe fitting
- 他是耶鲁大学比我高两级的学生。He was my senior at Yale by two years.
