May Day · Focus | CCTV's "Science Fiction Zone" Focuses on Railway Construction Heavy Industries: Behind the Super Project, These "Steel Corps" Cut Through the Mountains

May 5，CCTV（CCTV-10）《Science fiction zone》Use 40 minutes of topic time，It tells about the railway construction heavy industry digging through the mountains.“The Iron and Steel Corps”——Rock drilling jumbo、Wet spraying trolley、Arch frame trolley、Drilling and blasting tunnel construction equipment such as bolt jumbo，How to overcome difficulties、Chisel mountains and split stones，Jump“ Hip-hop ”Help the construction of super-difficult tunnels，The story of technological innovation that broke the world record。

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