这是一个不断试验的过程，当然也不可避免不断犯错误，这需要工厂和我们的通力合作。
It was a long process of trial and error with the collaboration of factories.
进行了书写纸微量涂布工艺技术的实验室研究和工厂试验。
Laboratory study and mill trial of mini_coating of writing paper have been carried out.
本机为专业院校、研究所、工厂试验室专用滚筒湿磨机。
This machine is a professional institutions, Research Institute, factory test room dedicated drum wet mill.
本机为专业院校、研究所、工厂试验室专用滚筒湿磨机。
This machine is a professional institutions, Research Institute, factory test room dedicated drum wet mill.
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