经工程负责人，工务课负责人的判断，使用治具能提高生产效率时；

经工程负责人，工务课负责人的判断，使用治具能提高生产效率时；

Results (English) 1:

Head of engineering works Section Leader's judgment, use fixtures can improve production efficiency;

Results (English) 2:

By the person in charge of the project, the Public Works Division in charge of human judgment, the use of jigs can improve production efficiency;