有一种金属,航天飞船穿着它进宇宙;潜水艇套着它下潜4500米深海进行侦查活动;用它制成的大型客机比同等重量的普通飞机多载100多人还能以每小时超3000千米的速度高飞;它的比重是铁的一半,却像铜一样经得起锤击和延拉;在低温下比钢更坚硬,它便是钛金属。今天,钛金属越来越多地运用在腕表制造上,它的特质能够为腕表带来怎样 There is a metal, spacecraft wearing it into the universe; submarine set it dive 4,500 meters deep sea for investigation; use it made than the same weight of large aircraft more than 100 ordinary aircraft can load more than 3000 hours per hour Km-high; its proportion is half that of iron, but can withstand the hammer and extension like copper; at lower temperatures is harder than steel, it is titanium. Today, titanium is increasingly used in the manufacture of watches, what its qualities can bring to the watch