carbon-packed gland碳精: carbon填密: densification; packing函: case; envelope盖: a surname填密函盖: packing gland; packing retainer; packingretainer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:碳精填密函盖，即可在微信中查询翻译
