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套管射孔枪套管射孔用的一种装置，装有聚能药柱或子弹，下至预定井深后发射，在套管、水泥环和地层中造成孔道，便于油气流人井内
expl. casing gun
套管射孔枪
geophys. casing gun
套 管 射孔枪: 3 phrases in 2 subjects
Geophysics2
Oil / petroleum1

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