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packing off
dril. 封严; 密封
pack-off
dril. 密封装置; 封隔器; 封隔件
pack off ['pæk'ɔf]
dril. 解雇; 匆匆离开
packing off: 25 phrases in 9 subjects
Advertising1
Business1
Drilling7
International trade1
Management1
Metallurgy1
Mining2
Oil / petroleum10
Technology1