“back shot”的概念、定义、翻译、参考文献-科学参考

单词	back shot
释义	back shot [`bak ´shät] ^{MINING ENGINEERING} A shot used for widening an entry, placed at some distance from the head of an entry.
随便看	nose cone nose fuse nose-heavy nose height nose leaf nose length noselite nose radius nose sill nose spray nosing nosocomial Nosodendridae nosology nosomania nosophilia nosophobia nostopathy nostril nostrum Notacanthidae Notacanthiformes NOTAM notancephalia NOT-AND

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