gravel pack

常用短語

dual gravel pack雙層礫石充填

gravel pack pot礫石罐

flow gravel pack循環法礫石充填

gravel pack well礫石濾水井

gravel-pack grave礫石充填用的礫石

lower gravel pack下層礫石充填

gravel pack packer礫石充填封隔器

surface gravel pack地面傾倒式礫石充填

gravel pack interval礫石充填層段