目前,保持架是用酚板和多孔的尼龙制造的,但其他材料也在进行研究中。

目前,保持架是用酚板和多孔的尼龙制造的,但其他材料也在进行研究中。的英文翻译

基本释义

• At the present time retainers are being manufactured of phenolic laminates and porous nylons, but other materials ranges are being investigated.