Cationic polyacrylamide (CPAM) flocculants, which are applied more and more widely in wastewater treatment, has been obtained usually by the Mannich reaction in a two-step way.
阳离子型聚丙烯酰胺絮凝剂在污水处理方面发挥的作用越来越大，阳离子聚丙烯酰胺往往通过曼尼奇反应以两步法获得。
Please note that to do step two effectively, allow yourself ample time because you will have to face some painful memories but that is the only way to heal.
请注意，为了有效的执行第二步，要给自己多一点时间，因为你要面对很多痛苦的回忆，但这是唯一的治于方法。
A simple service like this could normally be written in a day or two, but it took us most of the week as my mentor explained each step to me while we pair programmed our way through the process.
一般这样的简单web服务程序只需要一到两天，而我们俩在师傅的一步步指导下花了一整个礼拜，通过结对编程方式完成了整个流程。
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