gasket hand hole cover手: hand孔: hole; opening; aperture盖: a surname垫环: backing ring; grummet; gromm ...手孔盖: hand hole cover; hand hole plate; handhole cover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:手孔盖垫环,即可在微信中查询翻译