tunnelingn.掘进；开挖隧道；遂道工程；隧穿动词tunnel的现在分词形式.tunneln.隧道；地道；洞穴v.挖地道；挖隧道tunnel ventilation隧道通风tunnel exploration坑探工程tunnel and blow up掘进爆破tunnel diode logic隧道二级管逻辑Tunnel perforation巷道贯通tunnel arrangement巷道布置tunneling sequence掘进顺序tunnelluminescence荧光膜光辐射, 荧光膜发光tunnel water flush隧道涌水tunnel development平峒开拓