“helper set”的概念、定义、翻译、参考文献-科学参考

单词	helper set
释义	helper set [`hel·pǝr ´set] ^{MINING ENGINEERING} A set of timbers to reinforce the normal set of timbers in a mine.
随便看	nasal root breadth nasal root salient nasal septum nasal tip height nasal tip salient nascent nascent ribonucleic acid n'aschi Nasellina nasion nasion-menton nasolacrimal canal nasolacrimal duct nasolacrimal groove nasonite nasopalatine cyst nasopalatine duct nasopharynx nastic movement nasturan Nasutitermitinae Natalidae Natantia Nathansohn's theory Naticacea

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