扩大试验研究 meaning in English

pilot studies

A innovative technology with independent property right of knowledge on preparation of ultra - fine active zinc oxide by comprehensive utilization of zinc dross has been investigated and developed in this paper . the whole flow of preparation of ultra - fine active zinc oxide by comprehensive utilization of zinc dross and pilot test has been completed systemically
本课题研究了从锌浮渣中制备超细活性氧化锌的新工艺，系统地完成了从锌浮渣制备超细活性氧化锌的全流程以及扩大试验研究，试验证明从锌浮渣中制备超细活性氧化锌是可行的。