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- This paper describes analysis adjustment and maintain of persulphate etching solution in PCB production. 叙述印制板生产中过硫酸盐微蚀液的分析、调整和维护。
- The new method of producing basic copper carbonate from waste etching solution containing copper. 介绍了利用含铜蚀刻废液合成碱式碳酸铜的新工艺。
- Nanometer copper powders were prepared from acidic waste etching solution containing copper using hydrazine hydrate as a reductive agent. 以酸性蚀刻废液为铜源,水合肼为还原剂,采用液相还原法制备纳米铜粉。
- Waste etching solution containing copper,a type of hazardous waste discharged by PCB manufactories,is a potential menace to the environment. PCB产业所产生的含铜蚀刻废液是对环境存在较大潜在威胁的危险废物。
- In aluminium anodizing process, concentration of NaOH, Al 3+ and additives in alkaline etching solution were determined. 在铝合金阳极氧化生产工艺中,测定碱蚀槽液苛性钠、铝离子、添加剂的浓度。
- KSM-201is air-drying etching resist ink for acidic etching solution, which is used for making patterns on copper-clad laminates by means of acidic etching. KSM-201系列自干型耐酸抗蚀刻油墨用于酸性蚀刻法制造印制板电路图形。
- recycling of alkaline etching solution 碱性蚀刻液再生
- bingham's etching solution 宾厄姆电解腐蚀液
- They spend the winter(s) in a warmer climate. 他们在气候较暖的地方过冬。
- Most plural nouns in English end in "s". 英语的复数名词多以“s”结尾。
- The sweater had shrunk after repeated washing(s). 这件套头毛衣洗过多次已缩水了。
- etching solutions for examination of materials 检验材料的侵蚀溶液
- Some old folk(s) have peculiar tastes. 有些老人有特殊的爱好。
- Answer the following question(s). 回答下列问题。
- Most plural nouns in English end in s'. 英语的复数名词多以s结尾。
- The drug affects one's power(s) of concentration. 这种药影响人精神不能集中。
- Here are the designs. Which one(s) do you prefer? 这就是那些图样.;你喜欢哪一个[些]?
- Which journal(s) do you subscribe to? 你订阅哪一种杂志?
- The novel had an enormous vogue in the 1930's. 这本小说在三十年代曾广为流传。
- He earned four A's in the final examinations. 他期末考试四门功课得优。
