在选择恰当的清洗化合物时,主要是考虑它的性能和成本,同时亦要顾及其它一些因素,如使用方便、操作安全和环境问题等。如果我们对于要洗净什么东西、希望达到什么结果及使用什么设备能事先有所了解的话,就可使清洗剂发挥出最佳性能、获得满意的效果。此外,如能对清洗液内含些什么以及如何起作用的也有所了解的话,当然就更好了。 When choosing an appropriate cleaning compound, the main consideration is its performance and cost, taking into account other factors such as ease of use, operational safety and environmental issues. If we know what to wash, what we want to achieve and what equipment we know beforehand, we can get the best performance of the cleaning agent and get a satisfactory result. In addition, of course, the better if you know what is included in the cleaning solution and how it works.