pack off的意思|示意
送走；把……打发走；匆匆离开；寄出
pack off相关短语
1、 annulus pack off 环空封隔装置
2、 pack-off 密封
3、 annular pack off 环形封隔
4、 pack-off ele we are pirates, these data are stolen from youdao 封隔元件
5、 pack-off sealing area 封隔密封区
6、 pack-off adapter 密封接头
7、 lead seal pack off 铅封封隔
8、 bottom casing pack off 底部套管封隔器