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發(fā)布時間: 2013-1-7 22:19
正文摘要:用負(fù)壓提升帶提升圖上的罐體,是吸頭部比較節(jié)能還是尾部比較節(jié)能?所需要的負(fù)壓風(fēng)機(jī)怎樣計(jì)算? |
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