It tests that the linearity of XB rocket sled track has reached the first-class level in the world.

测量结果表明，XB滑轨轨道的直线度具有世界一流水平。

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To the leading technology for product development strategy, positioning the industry to look first-class level, to actively seize the highest point of the next competition.

以科技领先为产品开发策略，将眼光定位于行业一流水平上，积极抢占未来竞争的至高点。

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Sreesanth has the nickname 'Prince of Hat-tricks' because of his exploits at club and first-class level.

BBC: Sri Sreesanth

An opener at first-class level, Hussey was called into the Test side as an injury replacement for Justin Langer.

BBC: SPORT | Cricket | International Teams | Australia | Hussey hopes for happy homecoming

Precheck members usually get to use security lines set up for first-class and elite-level frequent fliers.

WSJ: $100 to Fly Through the Airport