Plenty of practice pit stops going on this afternoon, with tyre changes set to be the critical factor in stops this year thanks to the refueling ban.

今天下午有很多停站练习，由于禁止赛中加油，轮胎的调整将是今年比赛进站过程中的重要因素。

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This paper analyzed the application of earth nail support technique in basis pit excavation in combination of engineering practice.

结合工程实例详细介绍了土钉支护技术在基坑开挖中的应用。

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Based on the actual construction practice, the mechanism model and construction technique of ejector anchor retaining and protecting for soft foundation pit.

通过施工实例，对软土基抗围护中喷锚网支护的机理模型及施工技术进行探讨，并介绍实际技术处理措施及效果。

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The computer-controlled A380 mock-up, the only one in the U.S., is located in a fire pit so firefighters can simultaneously practice fighting fires outside and saving people inside.

WSJ: Airplane Fires: Dallas-Fort Worth International Airport's Firefighter Training