standard specification for steel bars carbon hot-wrought special quality
Related Translations:
特级: special grade [class]; superfine 短语和例子特级茉莉花茶 superfine jasmine tea; 特级飞机 manoeuvering aircraft; 特级大师(棋类) grand master (g.m.); 特级记者 special-ranked reporter; 特级教师 teacher of a special classi
