问题描述：
英语翻译
Each30 rooms to have one "rack" of compressors of 175h.p.each He has spec'dModel 4MK-35X at 5 per rack.
Each30 rooms to have one "rack" of compressors of 175h.p.each He has spec'dModel 4MK-35X at 5 per rack.
问题解答：
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