搜索 - 科创

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甘油水溶液的沸点随甘油浓度的增加而上升.如需配置沸点为120-180度的甘油水溶液.甘油浓度应控制在80%-90%.80%的溶液在标准气压下的沸点为120℃.90%的溶液在标准气压下的沸点为138℃....

前几天在回收站看到十几只CMD260驱动器，买了几只回来。测试的时候发现有两个问题1、输入脉冲脉冲输频率不能太高，否则不能响应。2、只能转一个方向，另外一个方向不动。输入我是这样接的，脉冲信...

塑料品种软化或熔融范围/°c塑料品种软化或熔融范围/oc聚醋酸乙烯35~ 85聚氧化甲烯165~185聚苯乙烯70~115聚丙烯160~170聚氯乙烯75~90尼龙12170~180 密度0....

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