Mix gel fluid for drilling conductor hole.
为钻导管井眼配制高粘度泥浆。
Computers were connected to the Ethernet cable through "taps," where a hole is punched through the coax cladding and the outer conductor so a connection can be made to the inner conductor.
计算机通过贯穿熔覆和外导体的小孔与内导体接触并相连，与以太网电缆建立起连接。
Why does the conductor cut a hole in your railroad ticket?
列车员为什么在你的火车票上切一个洞？
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