ingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">机械密封的基本形式，接触式密封的结构和应用，值得保存学习ingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">原创2020-12-24 15:57·一位工程师微信搜索公众号【深圳家】或者直接搜索【i-shenzhen】，获取更多信息 | 
