在什么基础上英文

在此基础上英译：1-on this basisOn this basis, we developed a set of emulsion-purified device and made a trialin a cold rolling mill.在此基础上，我们研制出一套净化设备并在轧机上进行了试验。2-on the basis of thatOn the basis of that, some selection criteria and opinions for NSSK control system have put forward.在此基础上，提出了作者对地球静止卫星南北位置保持控制系统的选择原则和看法。