This paper is about the design of PC controlling system of normal ring in textile factories and indicates the ladder diagram of controlling system and its working process.
利用PC技术对纺织厂细纱机控制系统进行改造，给出了控制系统梯形图并说明了其工作过程。
Spinning tests on normal ring spinning frame and compact spinning frame with yarn path modified were carried out, and the performances of thus spun yarns were tested and compared.
在棉纺常规环锭细纱机和紧密纺环锭细纱机上进行了改变纱路的纺纱试验，测试对比了纱线性能指标。
Spinning tests on normal ring spinning frame and compact spinning frame with yarn path modified were carried out, and the performances of thus spun yarns were tested and compared.
在棉纺常规环锭细纱机和紧密纺环锭细纱机上进行了改变纱路的纺纱试验，测试对比了纱线性能指标。
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