您要查找的是不是:
- L245A级钢管L245A-pipe
- X65级钢管X65 grade steel pipe
- X80级钢管X80 grade steel pipe
- JP级钢管磷化的研究PHOSPHATIZATION OF JP GRADE STEEL TUBE
- 钢管steel tube
- 级联connection
- 大学英语四级College English Band 4
- 船级ship' classification
- 镀锌钢管galvanized steel tube
- 三级片third-grade film
- 无级stepless
- 焊接钢管welded steel pipe
- 级配graduation
- 他将望远镜收进一根钢管内。He slipped the telescope into a steel tube.
- 第二级secondary
- 大学英语六级考试CET-6 [College English Test, Band Six]
- 钢管里塞满了脏物。The steel tubes were clogged with dirty matters.
- 第一级first step
- 钢管桩steel pipe pile
- 工业级technical grade