请问下面的“E4a'催化剂是什么东西，先
Pretreatment of the catalyst: before each experiment the
sample of E4a was powdered and heated at 120 _C for 2h.
请问下面的“E4a'催化剂是什么东西，先
Pretreatment of the catalyst: before each experiment the
sample of E4a was powdered and heated at 120 _C for 2h.
其实我也想知道，只是英文太烂。
继续求助中
其实我也想知道，只是英文太烂。
Pretreatment of the catalyst: before each experiment the
sample of E4a was powdered and heated at 120 _C for 2h.
请问下面的“E4a'催化剂是什么东西，先
Pretreatment of the catalyst: before each experiment the
sample of E4a was powdered and heated at 120 _C for 2h.
其实我也想知道，只是英文太烂。
继续求助中
其实我也想知道，只是英文太烂。