When the grillage beam structure is exposed outside, especially when the height and width of the beam are relatively large, the spray head layout will be greatly influenced.
当“井”字梁结构外露，特别是梁的高度与宽度都较大时，对消防喷头的布置带来很大影响。
When the grillage beam structure is exposed outside, especially when the height and width of the beam are relatively large, the spray head layout will be greatly influenced.
当“井”字梁结构外露，特别是梁的高度与宽度都较大时，对消防喷头的布置带来很大影响。
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