English translation for "导洞口"

heading collar

Related Translations:

洞口:  entrance to a cave

洞口钢筋:  trimming bar

洞口开挖:  portal-in

垂直洞口:  vertical opening

墙洞口:  wall opening

平洞口:  adit collaradit openingadit portal

洞口保护:  opening protection

洞口尺寸:  dimension of opening

流线型洞口:  enlarged culvert inlet

洞口定位:  location of adit

Similar Words：

"导洞掘进" English translation, "导洞掘进法" English translation, "导洞掘进工" English translation, "导洞开采" English translation, "导洞开挖" English translation, "导洞梯段挖法" English translation, "导洞与层阶法" English translation, "导洞掌子面" English translation, "导洞支撑" English translation, "导读" English translation