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For rail inspectors, tiny flaws are big trouble

By Yang Jun in Guiyang | chinadaily.com.cn | Updated: 2021-03-03 16:38
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It's a big challenge for these railway staff to walk more than eight hours carrying nearly 50 kilograms of detectors to inspect about 10 kilometers of railway lines in a day.[Photo by Miao Guoqiang/For chinadaily.com.cn]
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