搜索筛选:
搜索耗时1.7325秒,为你在为你在102,285,761篇论文里面共找到 1,000 篇相符的论文内容
类      型:
[期刊论文] 作者:Chaojie XIE,Kejian WANG, 来源:摩擦:英文版 年份:2021
Polytetrafluoroethylene(PTFE)blended with polyimide(PI)and filled with boron nitride(BN)is prepared through cold pressing and sintering for composites with remarkable wear resistance and reduced coefficient of friction(COF).The characteriza......
[期刊论文] 作者:Hongkun Nie,Feifei Wang,Junting Liu,Kejian Yang,Baitao Zhang,Jingliang He, 来源:中国光学快报(英文版) 年份:2021
Mid-infrared[MIR]laser sources operating in the 2.7-3 μm spectral region have attracted extensive attention for many applications due to the unique features of locating at the atmospheric transparency window,corresponding to the“character......
[期刊论文] 作者:Lanqin Xia,Kejian Wang,Jian-Kang Zhu, 来源:植物学报(英文版) 年份:2021
Increasing world population, global climate change, de-creased farmland, environmental pollution and ecological deterioration represent unprecedent challenges f...
[期刊论文] 作者:Xiaoxia Huang,Zhilu Sheng,Kejian He,Yong Zhang,Bin Kang,Jiao Ding,Dongmei Liu, 来源:植物生态学报(英文版) 年份:2021
人为干扰程度的加剧会引起植物群落物种多样性和功能多样性的改变,并降低生态系统的稳定性.较高水平的功能冗余对于物种损失引起的生态系统功能和稳定性的改变起到了重要的缓冲作用.然而,关于亚高山草甸植物群落功能冗余对干扰的响应的研究相对较少.本研究的目......
[期刊论文] 作者:Zhengda Sun,Feifei Wang,Haiping Xia,Hongkun Nie,Kejian Yang,Ruihua Wang,Jingliang He,Baitao Zhang, 来源:中国光学快报(英文版) 年份:2021
In this paper,the absorption and fluorescence spectra of Er3+,Pr3+ co-doped LiYF4[Er,Pr∶YLF]crystal were measured and analyzed.The Pr3+ co-doping was proved to effectively enhance the Er3+ ∶4I11/2 → 4I13/2 mid-infrared transition at the ......
[期刊论文] 作者:HE JIANKUN, 来源:今日中国:英文版 年份:2021
CHINA made the commitment to reduce its CO2 emissions per unit of GDP by 40-45 percent by 2020 as compared with 2005 at the UN Climate Change Conference 2009 in...
[期刊论文] 作者:HE Hong-hua, 来源:美中外语:英文版 年份:2021
As the chief means of communication in international trade,Foreign Trade Correspondence has been widely used in the field of social business.Task-based approach...
[期刊论文] 作者:Dongping He, 来源:财经研究杂志(英文) 年份:2021
With the continuous development of our national economy,the living standard of the people has been improved significantly,the needs of the people are not limite...
[期刊论文] 作者:Tingting He, 来源:当代教育研究(百图) 年份:2021
With the release of English Curriculum Standards for Senior High School,the cultivation of students’key competencies of English subject has become the major co...
[期刊论文] 作者:He Jing, 来源:中国东盟报道(英文) 年份:2021
The last day of 2020 marked a milestone in the research and development of inactivated vaccines to fight COVID-19 in China.At a December 31 press conference org...
[期刊论文] 作者:Tianxiao HE, 来源:数学研究及应用 年份:2021
For an integer p ≥ 2 we construct vertical and horizontal one-pth Riordan arrays from a Riordan array.When p = 2 one-pth Riordan arrays are reduced to well kno...
[期刊论文] 作者:Ke He, 来源:国家科学评论(英文版) 年份:2021
Experimental progress on the quantum anomalous Hall(QAH)effect has been significantly accelerated recently by the discovery of an intrinsic magnetic topo-logica...
[期刊论文] 作者:He Jiankun, 来源:北京周报(英文版) 年份:2021
The annual plenary session of the National People's Congress (NPC), the top legislature of the country, held in March unveiled new targets for achieving carbon...
[期刊论文] 作者:He Wenping, 来源:中国与非洲(英文版) 年份:2021
The year 2020 is of special signifi- cance in world history and the history of China-Africa relations. The global outbreak of the COVID-19 pandemic presented an...
[期刊论文] 作者:He Jiankun, 来源:中国与非洲(英文版) 年份:2021
At the annual plenary session of the National People's Congress (NPC), the top legislature of the country, in March, China unveiled its new targets for achievin...
[期刊论文] 作者:Xuezhong He, 来源:绿色能源与环境:英文版 年份:2021
There is an urgent need to develop technologies which enable the conversion of biomass into liquid biofuels to fill the gap between limited fossil fuel supplies and increasing worldwide demand.In order to achieve the EU 2030 vision of at le......
[期刊论文] 作者:HE YIN, 来源:今日中国:英文版 年份:2021
THE 47th session of the UN Human Rights Council concluded on July 14 in Geneva,Switzerland.China’s stance on human rights was widely supported and responded to at the session,and the country also received high evaluation for its sense of r......
[期刊论文] 作者:Yong He, 来源:生物设计与制造(英文) 年份:2021
Recently,the First Youth Forum of Bio-design&Manufac-turing(BDM)was held in Hangzhou on July 3,2021.Acad-emician Huayong Yang,Editor-in-Chief of BDM,acted as the Chairman and this conference was jointly sponsored by the School of Mechanical......
[期刊论文] 作者:HE Li, 来源:山地科学学报(英文版) 年份:2021
Jing River is a tributary of the Wei River which is the largest tributary of the Yellow River.Sediments eroded from the upland of the Jing River basin are one of the major contributors of sediment entering the lower Wei River (LWR).The Dong......
[期刊论文] 作者:Xuezhong He, 来源:工程(英文) 年份:2021
Carbon dioxide(CO2)capture by gas-separation membranes has become increasingly attractive due to its high energy efficiency,relatively low cost,and environmental impact.Polyvinylamine(PVAm)-based facilitated transport(FT)membranes were deve......
相关搜索: