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[期刊论文] 作者：Lu Yan,
来源：北京周报（英文版） 年份：2021
During the Double 11 online shopping festival season, Liu Lu, a 28-year-old res-taurant owner in Shenzhen, Guangdong Province, “purchased” something rather special on Taobao, one of China\'s leading online shopping platforms. With 66 yuan......
[期刊论文] 作者：By Guo Yan,
来源：China’s foreign Trade 年份：2021
On September 10， the Chi- na-ASEAN Business Leaders Forum and a Special Meeting on the 30th Anniversary of China-ASEAN Dialogue Relations was held in Nanning， Guangxi Zhuang Autonomous Region. Centeri...
[期刊论文] 作者：By Lu Yan,
来源：Beijing Review 年份：2021
Ping-Pong Diplomacy 2.0 打开文本图片集......
[期刊论文] 作者：Lu Yan,
来源：北京周报（英文版） 年份：2021
The 2021 World Table Tennis Championships kicked off in the American city of Houston, Texas on November 23. Four Chinese and American paddlers teamed up into two pairs, each with a player from both countries, to compete in the mixed doubles......
[期刊论文] 作者：By WANG YAN,
来源：CHINA TODAY 年份：2021
Li Ning:Life-Long Devotion to China’s Hepatobiliary Surgery...
In2O3∶H for enabling highly NIR-transparent perovskite solar cells and 24.6% 4-T perovskite/CIS tand
[会议论文] 作者：Yan Jiang,
来源：第八届新型太阳能材料科学与技术学术研讨会 年份：2021
High efficiency four-terminal (4-T) tandem solar cells rely on three transparent electrodes with high conductivity and low free carrier absorption in the near-infrared (NIR) region.In this work,a high...
[期刊论文] 作者：HU Yan,
来源：中国藏学（英文版） 年份：2021
1. The U.S. government encouraged and supported the armed rebellion by the Tibetan upper class reactionaries in 1959rn1) The conspiracy of the United States before the rebellion.rnAfter the peaceful liberation of Tibet in 1951, the U.S. gov......
[期刊论文] 作者：Lu Yan,
来源：北京周报（英文版） 年份：2021
At the age of 15, Sun Wenqiang first dipped his spoons into the world of cooking under the watchful eye of a senior chef specializing in cooking dishes of Huaian cuisine, which originated from Huaian, Jiangsu Province in east China, but is ......
[期刊论文] 作者：Li Yan,
来源：现代国际关系（英文版） 年份：2021
During Angela Merkel\'s administration,the German government supported scientific and technological policies that promote German socioeconomic development.After a narrow election win for the Social Democratic Party,Merkel\'s position as cha......
[期刊论文] 作者：Yan Wei,
来源：现代国际关系（英文版） 年份：2021
In the wake of the Afghanistan War,the Afghan Taliban(hereafter termed the Taliban) quickly regrouped and set up a horizontal organizational structure in which their ethnic composition became increasingly diverse and their ideology appeared......
[期刊论文] 作者：YAN Pengfei,
来源：Aerospace China 年份：2021
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[期刊论文] 作者：Yan Bao,Qingyun Yan,Jiahui Ji,,
来源：天津大学学报:英文版 年份：2021
Water pollution is a global environmental issue with multi-dimensional infl uences on human life.Some strategies,such as photo-Fenton reaction,have been employe...
Convenient construction of spiro[indoline-3,5’-pyrrolo[3,4-c]carbazole]and spiro[indene-2,5’-pyrrolo
[期刊论文] 作者：Chen Yan,Jing Sun,Chao-Guo Yan,
来源：中国化学快报：英文版 年份：2021
p-TsOH catalyzed Diels-Alder reaction of 3-(indol-3-yl)maleimides with 3-phenacylideneoxindoles in toluene at 80℃for two hours afforded cis/trans isomers of 3 a’,4’,6’,10 c’-tetrahydrospiro[indoline-3,5’-pyrrolo[3,4-c]carbazoles]in ne......
Convenient construction of spiro[indoline-3,5’-pyrrolo[3,4-c] carbazole] and spiro[indene-2,5’-pyrro
[期刊论文] 作者：Chen Yan,Jing Sun,Chao-Guo Yan,
来源：中国化学快报（英文版） 年份：2021
p-TsOH catalyzed Diels-Alder reaction of 3-(indol-3-yl)maleimides with 3-phenacylideneoxindoles in toluene at 80 C for two hours afforded cis/trans isomers of 3...
[期刊论文] 作者：YAN Yan,MA Hongzhong,LI Zhendong,
来源：电子学报（英文版） 年份：2021
We proposes an improved grasshopper algorithm for global optimization problems. Grasshopper optimization algorithm (GOA) is a recently proposed meta-heuristic a...
[期刊论文] 作者：Yan Yan HAN,Huo Xiong WU,
来源：数学学报（英文版） 年份：2021
Let T be a strongly singular Calderón Zygmund operator and b ∈ Lloc(Rn).This article finds out a class of non-trivial subspaces BMOω,p,u(Rn) of BMO(Rn) for certain ω ∈ A1,0 ＜ p ≤ 1 and 1 ＜ u ≤ ∞,such that the commutator[b,T]is bounded......
[期刊论文] 作者：Tao Yang,Xinlei Yi,Shaowen Lu,Karl H.Johansson,Tianyou Chai,
来源：工程（英文） 年份：2021
Based on the analysis of the characteristics and operation status of the process industry,as well as the development of the global intelligent manufacturing industry,a new mode of intelligent manufacturing for the process industry,namely,de......
The Relationship Among TCSL Teachers’Self-Efficacy,Students’Learning Motivation,and Academic Perform
[期刊论文] 作者：Ming Yan ZHANG,
来源：美中教育评论:A 年份：2021
With China’s tremendous economic strength and significant promotion of international status,the Chinese language is becoming a highly valued and widely accepte...
[期刊论文] 作者：Deng Sheng yan,
来源：科学与财富 年份：2021
Abstract： The media is exposed in everywhere around the world， and is the driving force of social development and progress. However， everything has two coins and the media has no exception that media...
Role of titanium carbide and alumina on the friction increment for Cu-based metallic brake pads unde
[期刊论文] 作者：Tao PENG,Qingzhi YAN,Xiaolu ZHANG,Yan ZHUANG,
来源：摩擦:英文版 年份：2021
To understand the effect of abrasives on increasing friction in Cu-based metallic pads under different braking speeds,pad materials with two typical abrasives,titanium carbide(TiC)and alumina(Al2O3),were produced and tested using a s...
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