硐，中国汉字，指山洞、窑洞、矿坑。
vt. cave
misc. cave dwelling
平硐 [矿业] adit ; stulm ; drift
平硐口 [矿业] adit mouth ; adit entrance ; [矿业] adit collar ; tunnel opening
平硐开采 adit cut mining ; drift mining ; tunnel mining
避难硐室 refuge chamber ; refuge&cham ; refuge chamberzmjt ; refugechamb
通风平硐 air adit
硐室爆破 heading blast ; chamber blasting
排水平硐 drainage gallery ; water carrying tunnel ; waste water gallery
勘探平硐 prospecting adit ; exploration adit ; prospect tunnel ; prospect t tunnel
平硐开采矿山 adit mine
入风硐 intake level
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