Textile machinery and accessories; rings and travellers for ring spinning and ring doubling frames; part 2: HZCH-, HZ- and J-rings and their appropriate travellers是什么意思_Textile machinery and accessories; rings and travellers for ring spinning and ring doubling frames; part 2: HZCH-, HZ- and J-rings and their appropriate travellers在线翻译_英语_读音_用法_例句