'Triple-mix gas' shield equipment sets multiple world records

ECNS (China News Service)

The world's first "triple-mix gas" hyperbaric intervention system for shield tunneling, independently developed by China Railway 11th Bureau Group, completed its first large-scale cutterhead tool replacement operation under ultra-high pressure on Thursday in the Jintang Subsea Tunnel in Zhoushan, east China's Zhejiang Province. ...

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'Triple-mix gas' shield equipment sets multiple world records

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