国产欧美久久一区二区,国产偷国产偷亚洲高清日韩

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With these two respects of researches , the useful tools to reduce carbon loss are provided for increasing boiler efficiency by adjusting combustion . shi yong hong ( thermal power engineering ) directed by prof
通過這兩方面的研究，為調(diào)整燃燒，降低機(jī)械未完全燃燒熱損失，提高鍋爐熱效率提供了有用的工具。
Not long ago , my colleague han yong hong wrote a news report that the curtains would fall for the last time for sin yong hua heng - a teochew opera troupe with 174 years of history - after its aptly - chosen swansong wan gu liu fang an everlasting legacy in yishun
不久前,在聯(lián)合早報新聞版,看到了同事韓詠紅報道,具有174年歷史的新榮和興潮劇團(tuán)在義順上演最后一場潮劇萬古流芳就宣告落幕了。
Not long ago , my colleague han yong hong wrote a news report that the curtains would fall for the last time for sin yong hua heng - a teochew opera troupe with 174 years of history - after its aptly - chosen swansong " wan gu liu fang " ( an everlasting legacy ) in yishun
不久前，在《聯(lián)合早報》新聞版，看到了同事韓詠紅報道，具有174年歷史的新榮和興潮劇團(tuán)在義順上演最后一場潮劇《萬古流芳》就宣告落幕了。