Q2——同一种机械台数（台）；（取主要用水机械，空压机3台）

Q2——同一种机械台数（台）；（取主要用水机械，空压机3台）

Results (English) 1:

Q2——The number of machines of the same type (sets); (take the main water machinery, 3 air compressors)

Results (English) 2:

Q2 -- the number of machines of the same type (set)（ Main water consumption machinery, 3 air compressors)

Results (English) 3:

Q2 - the same number of machines (tables) ;( take the main water machinery, air compressor 3)