The reasons which cause the defects have been analyzed,and afterwards,the measures to prevent and cure weft direction defects have been introduced from points of view of yarn property,loom condition and technique.
对用喷气织机织造弹力牛仔布常见的 4种纬向疵点的产生原因进行了分析 ,并介绍了自原料品质、织机状态到工艺设计等方面的合理防治措
The angular distance to a point on a celestial object, measured north or south from the celestial equator.
赤纬到达某天体一点的角距,从天体赤道向北或向南测量得出