two-strand anneal and pickle line

... two-storied furnace 双层炉 two-strand anneal and pickle line 双线退火和酸洗作业线 two-strand rolling 双线轧制 ...

... two-strand 双股 two-strand anneal and pickle line 双线退火酸洗作业线 two-stranded helical structure 二股螺形结构 ...