The pressing crack is the the effective measure which is used in oil gas well and water injection well at present.
压裂是目前油、气井增产和注水井增注的有效措施。
Pressing crack is one of important means for increasing oil and gas well production and water injection of injection well.
水力压裂是油气井增产、注水井增注的一项重要措施。
Pressing sheet metal forming, its substrate should be crack.
压型金属板成型后，其基板不应有裂纹。
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