A 5,227-meter-long tunnel has been drilled through along a high-speed railway under construction in SW China.

A 5,227-meter-long tunnel has been drilled through along a high-speed railway under construction in SW China.

Ein Chinalee

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A 5,227-meter-long tunnel has been drilled through along a high-speed railway under construction in SW China.

 

Category: People & Blogs
License: Public Source

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