After testing hundreds of materials, they baked a piece of coiled cotton thread until it was all carbon.
在测试了数以百计的材料之后，他们把一块缠在一起的棉线烘烤到碳化状态。
The old lady has spun yards of cloth from cotton thread.
老太太已用棉线织出了好几码布了。
It was built in 1784 by Samuel Greg, a merchant, who found profit in supplying cotton thread to Lancashire's weavers.
1784年，一个叫萨缪尔·格雷格的商人将其建成，这个人通过给兰开夏郡的纺织工人提供棉线获得利润。
Others earned that honor some 30 years before, but in 1880 Edison devised the first practical, long-lasting bulb, using a carbonized cotton-thread filament.
有人在大约30年前就获得了那项荣誉，但1880年，爱迪生利用一根碳化的棉线细丝发明了第一个实用的、维持很长时间的灯泡。
Others earned that honor some 30 years before, but in 1880 Edison devised the first practical, long-lasting bulb, using a carbonized cotton-thread filament.
有人在大约30年前就获得了那项荣誉，但1880年，爱迪生利用一根碳化的棉线细丝发明了第一个实用的、维持很长时间的灯泡。
应用推荐