试验线路的确定是行驶工况调查的关键环节。
Confirming test routes is crucial step of driving investigation.
当试验进行到第7对病人时，试验线触及序贯试验图上边界线。
When the result of the 7th pair of the patients was marked on the sequential graph , the trial line touched its upper border line.
中国中车日前表示，将建设一条长度不小于5公里的高速磁浮试验线。
The company said it will build a maglev rail line no less than 5 km long to test the train.
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