5WHY分析又称5问法，由丰田公司提出；

5WHY分析又称5问法，由丰田公司提出；

Results (English) 1:

The 5WHY analysis, also known as the 5-question method, was proposed by Toyota;

Results (English) 2:

5WHY analysis, also known as 5-question method, was proposed by Toyota;

Results (English) 3:

5WHY analysis, also known as the 5-question method, was put forward by Toyota;