Name: China's undersea life-support tech proves its mettle in key tunnel test
Uploaded: 2026-08-18T21:53:48+08:00
Duration: PT30.583S
Description: On August 17, workers deep beneath the sea replaced shield machine cutters on the world's longest undersea high-speed rail tunnel – a high-pressure job that put China's own hyperbaric life-support technology to the test. Once open, the tunnel will slash

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On August 17, workers deep beneath the sea replaced shield machine cutters on the world's longest undersea high-speed rail tunnel – a high-pressure job that put China's own hyperbaric life-support technology to the test. Once open, the tunnel will slash travel time between the coastal cities of Ningbo and Zhoushan in east China's Zhejiang Province to just 26 minutes.

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