基本解释[經濟學]絲芯紗英汉例句雙語例句It forms a special composite yarn with cotton as the core thread covered by mulberry silk.它以棉紗爲芯，桑蠶絲包複在芯線外層，形成獨特的真絲複郃絲新材料。silk core yarn更多例句专业释义經濟學絲芯紗