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 drying oven隧道式干燥窑tunneling electron隧道电子tunnel fire hazard隧道火灾tunneling-etlect隧道效应tunnel engineering隧道工程tunnel instability隧道失稳Tunnel proxy model隧道代理模型tunnel deformation隧道变形tunnel diode mixer隧道二极管混频器tunnelling project隧洞工程