experimental investigation

• 试验研究

experimental investigation的用法和样例：

例句

1. In conclusion, more theoretical and experimental research must be conducted.
   总之，必须进一步开展理论和试验研究。
2. The Experimental Research for the Pulverized Coal Combustion accompanied with the Oil Gas.
   煤粉炉掺烧油田伴生气的试验研究。