简介:OnthebasisofMARKAL-MACROmodelof'Energy-Economy-Environment'systemandKeyfitzmodelofdemography,energydemandinChinainthefuturewascalculated.Threescenarioswereputforwardtakingintoaccountofenergyefficiency,energystructureandrestrictionofclimatechange.CO2EmissionsinChinawillreachpeakvalue11.85Gtin2042inreferencescenario;10.75Gtin2036inoptimizedscenario;and9.47Gtin2031inrestrictionscenarioofclimatechange.Comparewithreferencescenario,carbonemissionsinrestrictionscenarioofclimatechangewilldeclineby2.38Gt,andpeaktimewillbellyearsearlier.Withthedevelopmentofurbanizationandindustrialization,carbonemissionsfromelectricpower,cement,steelwillrisegraduallythengodown;butemissionsfromtrafficwillgoupcontinuouslybecauseoftheincreaseofvehiclefleet.
简介:摘要往复压缩机作为机械设备领域的一部分,由于其结构复杂,激励源多,对其实施故障诊断比较困难,尽管人们己对其开展了不少研究并取得了一些研究成果,但总的诊断水平还不是很高。本文就对往复式压缩机排气阀阀片断裂原因进行了深入分析。
简介:of restoring the source cultural reality embodied in the source language in the target language that usually,equivalence of this category might be more attributable to the cultural exchange activities outside the scope of translation than to the very act of translating.,the target language is entrusted to express the cultural reality specific to the source language
简介:摘要介绍了什么是煤矿巷道修护机,煤矿巷道修护机的技术背景,煤矿巷道修护机的基本工作原理,并结合实际的施工过程简单的诉述一下煤矿巷道修护机的施工方式和施工工序以及配置的设备,将煤矿巷道修护机与传统巷道修路工序进行比较。总结出煤矿巷道修护机的具体优势。