Г | 俄汉核电词汇 Русско-Англо-Китайский... ... sealer 密封器 seal membrane 密封膜* tight penetration 密封贯穿件* ...

机械专业英语词汇-机械资讯-马棚网... ... seal loop 封环 seal membrane 密封膜片 seal oil 密封用油 ...