【摘 要】
：
In 2021, the overall performance of the bus market was better than that of the previous year, with an overall sales volume of 492,300 units, a year-on-year increase of 12.66％. Among them, the performance of light buses was the most outstanding, with sales
论文部分内容阅读
In 2021, the overall performance of the bus market was better than that of the previous year, with an overall sales volume of 492,300 units, a year-on-year increase of 12.66％. Among them, the performance of light buses was the most outstanding, with sales volume of 404,300 units, a year-on-year increase of 20.98％, and the growth rate increased by 14.48 percentage points over the previous year. The market performance of buses in the six major regions in China was significantly better than that of the previous year; and the backbone enterprises in the industry still maintain a high market share.
其他文献
On January 11, 2022, the 2021 Knorr Commercial Vehicle System Media Day with the theme of “Ensure stability and long-term developmentwith low-carbon innovation” was held in Shiyan, Hubei Province. More than 30 mainstream media across the country visited t
In the past 6 years from 2015 to 2021, a Hubei engineering company has purchased 10～15 units of Dongfeng light vehicles in Xianning Zhonghe 4S Store of Dongfeng Light Vehicles every year, including Dongfeng Captain, Dongfeng Duolika D6, Dongfeng Duolika D
车路协同(V2X)技术在自动驾驶汽车中起着至关重要的作用.车路协同(V2X)可以将车体作为包括车与车、车与路、车与人的整个循环中的一环,弥补单个车辆的不足,把车、路、人的信息交互化为车辆的“视觉”,从而可大幅度减少车辆的成本,填补单个车辆的技术盲区.
Recently, the reporter interviewed a truck owner—Bai Jin from Cangzhou, Hebei Province. Mr. Bai has been driving for five years and has driven many models of many brands. What he is most satisfied with is the Jiefang J6F.
In 2021, Ankai pure electric buses frequently challenge the extremely cold operation climate in northern China. Recently, Ankai pure electric buses arrived in Urumqi, Xinjiang in batches for bus operation to accept the test of complex climate.
In 2021, the production and sales of commercial vehicles were 4.674 million units and 4.793 million units, with a year-on-year decrease of 10.7％ and 6.6％, respectively, ending the rapid growth trend of the previous year. Among the main varieties of commer
In December 2021, the sales volume of light trucks in China was 177,000 units, with a year-on-year decrease of 7％. As a result, light truck is the segment model with the smallest year-on-year decrease in the truck market (-21.2％) in December, and December
以铁炭微电解作为预处理,采用升流式厌氧污泥床(UASB)和膜生物反应器(MBR)串联的方式降解二十二碳六烯酸(DHA)合成所产生的高浓度有机废水.通过单因素试验和正交试验获得了铁炭微电解反应的最佳工况:pH为3,反应时间为4 h,铁炭比为3∶1,搅拌强度为250 r/min.在最佳工况下,铁炭微电解可降低DHA原水中45％的化学需氧量(COD),且BOD5/COD值由0.10提升至0.31,改善了废水的可生化性.UASB反应器的最大容积负荷可达8 kgCOD/(m3·d),出水COD浓度稳定在1 500
This paper summarizes and analyzes the market characteristics of large and medium-sized buses in 2021. In 2021, 87,525 large and medium-sized buses were sold in China, a year-on-year decrease of 11.3％, a new low in the same period in recent years.
利用耦合协调模型和灰色关联模型,考察2007-2018年苏州市经济与水资源系统发展的时序变化特征,定量分析二者之间的协调关系,定位制约协调发展的关键要素.结果表明:苏州市经济发展与水资源系统耦合程度较高,发展过程由失调衰退阶段、调和阶段向协调发展阶段转变,现已呈良好耦合协调发展模式;水资源压力和水资源保护是制约经济发展的要素,经济结构则是影响苏州市水资源系统的第一要素;优化经济结构,调整工业产业布局,提高水资源利用效率是推进苏州市经济与水资源系统协调发展的根本途径.