It has been estimated that the reduction in coke rate after implementation of PMS gave a pay-back of less than 3 months.
英
美
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通過(guò)實(shí)踐證明,對過(guò)程優(yōu)化而減少的焦炭用量所產(chǎn)生的能源節約,其經(jīng)濟價(jià)值只需用3個(gè)月的時(shí)間就能抵償一臺質(zhì)譜儀的價(jià)格。
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国内精品美女A∨在线播放xuan