?箭形圈密封
... seal with annular groove ==> 油封槽 seal with arrow-rings ==> 箭形圈密封 seal with axis(by axia) deviation ==> 轴线偏斜密封 ...
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。