clean名词形式

　　Influence of emulsion performance on surface cleanness of cold rolled sheet

　　乳化液使用性能对轧后带钢表面清洁度的影响

　　Test Method Study on Printed Circuit Board Cleanness

　　印刷电路板清洁度检测方法研究

　　To supervise and control the order and cleanness in the production areas.

　　监督和控制生产区域的清洁环境。