在集中設(shè)備處加熱(或冷卻)轉(zhuǎn)換可以是手動或自動.Heating or cooling change over at the central plant may be manual or automatic.在絕大數(shù)工廠里, 材料經(jīng)常需要加熱或冷卻.In almost any plant, materials constantly being heated or cooled.根據(jù)所輸送介質(zhì)需要,螺桿泵裝置可提供加熱或冷卻結(jié)構(gòu).Accor...