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Terms for subject Drilling containing gravel | all forms | exact matches only
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bulk volume of gravel砾石的充填体积
caving gravel不稳定易塌砾岩层
circulating gravel packing循环砾石充填
emergency gravel packing应急砾石充填
external gravel pack外砾石充填
gravel packer completion砾石充填完井
multiple open hole gravel pack多层裸眼砾石充填
open hole gravel pack裸眼砾石充填
pea gravel小砾石豌豆大小