question and investigation

• 问卷调查

question and investigation的用法和样例：

例句

1. Methods Investigation was conducted using an anonymous questionnaire.
   方法采用无记名问卷调查方法调查。
2. Expert discussion and questionnaire investigation are the major methods used in this research project.
   专家座谈与问卷调查是本研究主要使用的两种工具。