目前，美国新罕布什尔州Nanocomp科技公司所制造的纺纱长度的纳米管已投入商业应用。
That's finally changing: New Hampshire-based Nanocomp Technologies is weaving nanotubes into lengths of yarn that can be built into commercial applications.
为了制造出存储体，他们又根据金属丝的长度将其打造成沙漏的形状并固定于一点。
To create the memory they tapered the wire to an hourglass shape at one point along its length.
中国最大的轨道交通装备制造商快科技中车公司声称，将建设一条长度不小于5公里的高速磁浮铁路线并进行下一步的列车试验。
CRRC Corp. Ltd., China's largest rail transportation equipment maker, said it will build a maglev rail line no less than 5 km long to test the train.
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