?单面凹砂轮
... wheel relieved and recessed same side 单面凹带锥砂轮 wheel recessed one side 单面凹砂轮 wheel recessed two side 双面凹砂轮 ...
英汉双解词典包含3185865条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。