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Can a heavy-duty train rail support 200 tons of pressure?重型火車軌道可以承受200噸的壓力嗎?
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Duration: 3:13
Views: 492K
Submitted: 4 years ago
Description:
Can a heavy-duty train rail support 200 tons of pressure?重型火車軌道可以承受200噸的壓力嗎?
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