No ions or metal were detected in either the UPW feed or the HUPW system product "."
无离子或金属的产品无论是在超纯水检测饲料或HUPW系统 ”。
For example, most of the reject water generated within the UPW system is re-circulated or re-used for back wash or other users.
例如，大部分由超纯水系统产生的废水会重新流动到后期水洗过程中，或者重新用于其他用途。
Wash the wafers with mixed acid, lotion and UPW (ultra pure water) by ultrasonic cleaning in wet sinks to get a clean and dry surface of wafers.
用混合酸、清洗剂和纯水在清洗槽或超声波清洗机内清洗硅片，使其表面洁净并烘干。
At present basic theory and welding criterion of UPW are defective, research on welding mechanism and melt behavior of the welding region is not enough for the difficulty in study.
由于超声波塑料焊接是涉及多学科的交叉学科，研究难度较大，目前超声波塑料焊接的焊接基础理论和工艺规范还比较欠缺，对超声波塑料焊接机理和熔接行为研究不足。
At present basic theory and welding criterion of UPW are defective, research on welding mechanism and melt behavior of the welding region is not enough for the difficulty in study.
由于超声波塑料焊接是涉及多学科的交叉学科，研究难度较大，目前超声波塑料焊接的焊接基础理论和工艺规范还比较欠缺，对超声波塑料焊接机理和熔接行为研究不足。
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