The free vibration analysis is conducted by using arch-frame structure model for brick arch floor, from this the local vibration and the whole vibration of the arch are studied.

对砖拱楼盖，采用拱框结构力学模型进行了自由振动分析，并探讨了局部振动和整体振动等同题。

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The Airbus A380 has 50% more floor space than arch rival Boeing's 747 Jumbo, with room for duty-free shops, restaurants and even a sauna, and can provide site for up to 853 people.

空客A380有比主要对手波音公司的747大型喷气式客机多50%的底层空间，有免税商店房间、餐厅、甚至有一个桑拿窒，并且能提供多达853人的座位。

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Firm your scapulas against your back torso, lengthen your coccyx toward the floor, and arch your upper torso back slightly.

把肩胛稳固于躯干后侧，向地板方向拉长尾骨，并把躯干上部往后轻轻地拱起。

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On the undercard earlier on Saturday, Commonwealth super-middleweight champion George Groves got off the floor and stopped Scot Kenny Anderson to defend his title and move closer to a possible showdown with arch enemy James DeGale.

BBC: David Haye stops Audley Harrison to retain WBA title