单层纱包铜线 single cotton-covered copper wire ; single cotton-covered enamel wire

单层纱包线 single cotton covered wire

三层纱包的 triple cotton-covered

双层纱包 covered double-cotton

单层纱包 covered single-cotton

厚漆双层包纱 heavy enamel bonded double cotton

厚漆单层包纱 heavy enamel bonded single cotton