“subsidence velocity”可以造什么句，subsidence velocity造句

Study was conducted on the roof of No. 3604S4 coal face and the actual mining roadway with fractals, and a few kinds of functional values of subsidence velocity of this face were obtained.

Study was conducted on the roof of No.3604 S4 coal face and the actual mining roadway with fractals, and a few kinds of functional values of subsidence velocity of this face were obtained.