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relief hole
释义
relief hole
Encyclopedia
工学
掘进爆破
释
relief hole
辅助眼
位于井巷掘进爆破掏槽眼与周边孔之间的炮眼。又称崩落眼。主要是破碎岩石,确保出碴量,以及为周边眼创造均匀的抵抗层。
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Nine Rivers
nine-six supplementation and draining method
Nine Songs
Nine Songs by Zhang Wo
nine steps of interrogation
nine techniques of needling
Nineteen Ancient Poems
Nineteen Ci-Poems of Song Dynasty
Nineteen Eighty-Four
nineteen incompatibilities
Nineteenth National Congress of Communist Party of China
Nine Temples
nine test
nine travel notes about Yongzhou
Ninette de Valois
Ninety-five Theses
Nineveh
Ningaloo Coast
Ning'an Shi
Ning Bin
Ning black tea
Ningbo
Ningbobang Museum
Ningbo Daily Group
Ningbo-dialect Nanci storytelling in the Siming Mountain area
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