piercing of a tunnel的意思|示意
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英 / /
凿穿隧道
piercing of a tunnel的网络常见释义
隧道掘进 ... 巷道掘进机 tunnelling machine 隧道掘进 construction of tunnels; piercing of a tunnel; tunnel drivage; tunnel driving; tunneling operation 隧道掘进法 tunnel driving method ...