导通孔： 金属化孔贯穿连接（Hole Through Connection）的简称。盲孔（Blind via）： 多层印制电路板外层与内层层间导电图形电气连接的金属化孔。
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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。
A hole cut through the polished concrete floor inside is intended to serve as a direct connection to the surroundings.
穿过内部抛光混凝土楼板的一个洞，目的是和周边环境有直接的联系。
The rudder device keyway to hole keyway , Hole of the conical hole, Not run through the holes, Moreover structure of two key connection , Large size , High precision machining.
舵装置的键槽是内孔键槽，孔为锥孔、盲孔，而且采用双键联接结构，尺寸大，加工精度较高。
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