Eight grades first volume middle school student learn reporting special printing plate of Shenzhen!
八年级上册中学生学习报深圳专版！
The special printing technique was studied for polyester fabrics dyeable with cationic dyes, and a series of experiments were carried out for it.
作者对阳离子染料可染涤纶织物的印花作了一系列探索试验。
The special printing technique was studied for polyester fabrics dyeable with cationic dyes, and a series of experiments were carried out for it.
作者对阳离子染料可染涤纶织物的印花作了一系列探索试验。
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