二八原则

Apply the Pareto Principle, which is also called Principle of Least effort. You regard it as a reminder that you put 80% of your effort to deal with the 20% of things that you consider most important.

二八原则又叫最省力法则：你应当将它作为一个提示器，每天提醒你将主要80%的精力放在最重要20%的事情上。

Combining cause-and-effect chats and two-eight principle, we have identified the main factors which affect the quality.

结合因果图、二八原则等找出了影响质量的主要因素。