triplex silk covered wire 三层丝包线
single silk covered wire 单丝包线 ; 单层丝包线
silk covered wire 丝包线 ; 线包线 ; 丝卷线
enamel silk-covered wire 丝包漆包线
By the time the Chinese silk trade became important in the world, the Silk Road had covered almost 6,500 kilometers.
到了中国的丝绸贸易成为世界重要贸易时，丝绸之路已经覆盖了将近6500公里。
They may even have been covered with silk because silk was used a lot at that time.
它们甚至可能是用丝绸覆盖着的，因为丝绸在那个时候被广泛使用。
As a stopping point on the famous Silk Road, Loulan is believed to have been gradually covered over by sandstorms from AD 200 to AD 400.
楼兰是著名的丝绸之路的一个中转站，据说在公元200年至公元400年期间，它逐渐被沙尘暴覆盖。
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