可以有灵活多样的表达：
makes a preliminary exploration on……初步探讨
have theoretically given out ……理论上指出
Preliminary Study on the Concept of……初步探讨了……理念
英文科技论文写作最好用被动语态：
The idea（or concept） of…… were primarily analysed.
…… were primarily discussed(investigated) theoretically