【Key words】 no dig; guide hole; complex area; micro tunnel
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micro-tunnel diode 微型隧道二极管
micro-tunnel 小直径隧道
Micro Tunnel Escape 逃出小型隧道
tunnel micro-pressure wave 隧道微压波
Since the new tanks were installed on the opposite side of the field from the parking ramp, a horizontal micro-tunnel was drilled beneath the operating runway.
由于新的储油罐被安装在停机坪的对面，我们就在运营的飞机跑道底下挖了一条地下通道。
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