【摘 要】
：
This paper summarizes and analyzes the basic characteristics of China\'s new energy special vehicle market (including logistics and special purchase vehicles) in 2021. In 2021, China sold 160,700 new energy vehicles, a new high in recent years, with a g
论文部分内容阅读
This paper summarizes and analyzes the basic characteristics of China\'s new energy special vehicle market (including logistics and special purchase vehicles) in 2021. In 2021, China sold 160,700 new energy vehicles, a new high in recent years, with a growth rate of 125.6％.
其他文献
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.
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
为研究吞吐流对贡湖湾水环境的影响过程,应用MIKE21构建了吞吐流作用下太湖贡湖湾二维水动力与水质模型,分析TN、TP、NH3-N的转输与衰减过程与吞吐流的关系.研究表明:吞吐流对贡湖湾局部流场影响明显,入湖口处最大流速可达30 cm/s,而离入湖口较远区域最小流速仅为0.1 cm/s;在吞吐流持续影响30 d后,TN、TP、NH3-N的浓度值从人湖口至西南方向呈阶梯型降低;流量是决定吞吐流驱动水体交换效果的关键因素,随着吞吐流的加强,低浓度污染带范围逐步降低,在距望虞河口 7 km范围内各项污染物浓度衰