Making no waves

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Making no waves

机译：不招摇

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A thletes in the ancient Olympics com-Vpeted in the buff, on the grounds (among other things) that clothes were a hindrance to performance. Modern technology, however, has changed that. In some sports, notably swimming, the right attire can be an enormous boon. Take Speedo's LZR swimsuit, which was introduced in February. Fully 38 of the 42 world swimming records that have been broken since then have fallen to swimmers wearing lzrs. Indeed, some of those records have been claimed by less-than-notable racers, suggesting that the difference lies in the apparel, not the athlete.rnTo make the LZR, four innovations had to come together. The first is the fabric. The new suit is cut from a densely woven ny-lon-elastane material that compresses the wearer's body into a hydrodynamic shape but is extremely light. Moreover, there are no sewn seams. Instead, the suit is bonded by ultrasonic welding. Seams act as speed bumps in the water. Ultrasonic welding removes 6% of the drag that would other- wise occur, according to Jason Rance, the head of Aqualab, Speedo's research and development centre in Nottingham, Britain. Compared with Speedo's previous suit, which was used by numerous gold medallists in the 2004 Olympic games, the new material has half the weight yet triple the power to compress the body.

机译：古代奥林匹克运动中的一名运动员因（除其他因素外）认为衣服妨碍表演而被赋予了抛光效果。但是，现代技术已经改变了这一点。在某些运动中，尤其是游泳，正确的着装可能是一大福音。以2月推出的Speedo的LZR泳衣为例。从那以后打破的42个世界游泳纪录中，有38个落入了穿着lzrs的游泳者的行列。确实，其中一些记录已经被不太显着的赛车手宣称，这表明差异在于服装，而不是运动员。为了制造LZR，必须结合四个创新。首先是面料。这套新衣服是由紧密编织的尼龙弹性纤维材料制成的，这种材料将穿着者的身体压缩成流体动力形状，但重量却非常轻。而且，没有缝线。取而代之的是，衣服通过超声波焊接来粘合。接缝是水中的减速带。 Speedo位于英国诺丁汉的研发中心Aqualab负责人Jason Rance表示，超声波焊接可消除6％的阻力。与Speedo先前的服装相比，2004年奥运会上无数金牌获得者使用了Speedo，这种新材料的重量只有其一半，而压缩身体的能力却是其三倍。

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《The economist》 |2008年第8584期|104|共1页
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Making no waves

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