The third one was about building submarine cable tunnel.
第三则是关于建造海底电缆隧道。
They are building a submarine cable tunnel.
他们正在建设一条海底电缆隧道。
They are building a submarine cable tunnel.
建设一条海底电缆隧道。
The design of fire control in the cable tunnel is illustrated.
并举例叙述了电缆隧道内的消防设计。
Turning or branch of cable inside tunnel;
隧道内电缆转向或分支处；
Turning or branch of cable inside tunnel;
隧道内电缆转向或分支处；
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