[机械工程] grease seal; oil seal油: oil; fat; grease封: close; seal槽油封: seal with annular groove后油封: rear oil seal; rearoilseal; rebored内油封: inner oil seal下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:油封,即可在微信中查询翻译