Through orthogonal experiment, parameter of back zone draft multiple, roller center distance and roving twist factor are selected.

并通过正交试验对后区牵伸倍数、罗拉中心距和粗纱捻系数进行了优选。

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Using a BlackBerry or a similar device is a way to set reminders that brings you back into the "now" time zone.

用一个黑莓或者差不多的装置定时叫醒是将你带回“现在”这个时区的一种办法。

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If the disc goes out of the back of the end zone, the other team can walk it up a ways, similar to a touchback in football.

如果飞盘飞到了得分区的后面，另一支队伍要走很长的距离，类似于足球里的持球触地。

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He says it isn't always easy to make the transition from a war zone back to his day job.

NPR: Dodging Bullets to Vote in Haiti's Cite Soleil

So far, there is little sign that these rate increases are holding the euro zone back, but eventually they will have an effect.

ECONOMIST: Don't get your hopes up too high about growth in the euro area

Top seed and world number one Lindsay Davenport is on Court Four wacking balls left, right and centre as she bids to get back in the zone before resuming her rain-affected semi-final tussle with the number three seed Amelie Mauresmo.

BBC: SPORT | Tennis | Wimbledon blog