“tunnel set”的概念、定义、翻译、参考文献-科学参考

单词	tunnel set
释义	tunnel set [`tǝn·ǝl ´set] ^{MINING ENGINEERING} Timbers 6 to 8 inches (15 to 20 centimeters) in diameter and of sufficient height to support the roof of the tunnel.
随便看	Neckeraceae neck-in necking necking down neck rot necr-\|necro- necrobiosis Necrolestidae necrophagous necrophile necrophilia necrophilism necrophobia necropsy necrosis necrotic necrotic enteritis necrotic ring spot necrotize necrozoospermia nectar nectarine nectary nectocalyx Nectonematoidea

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