4Department of Chemistry, Obafemi Awolowo University, Ile-Ife 220005, Nigeria. Correspondence and requests for materials should be addressed to M.A.Q. (email: maquraishi.apc@itbhu.ac.in) or E.E.E. (email: Eno.Ebenso@nwu.ac.za) ScIentIFIc REports | 7:44432 | DOI: 10.1038/srep44432 1...
当前,不同分析中心北斗GEO卫星轨道一致性在米级,IGSO约为15 cm,MEO则为7 cm左右(Steigenberger and Montenbruck, 2020)。激光测距检核表明北斗二号GEO、IGSO和MEO卫星轨道误差为20、5-7和3.5 cm左右(Sośnica et al., 2020)。北...
Abstract p‐type doping levels of up to 5×1019 cm−3 in GaAs and 3×1019 cm−3 in Al0.3Ga0.7As have been obtained in molecular‐beam epitaxy (MBE) wit... M Ilegems - 《Journal of Applied Physics》 被引量: 222发表: 1977年 Synthesis of Y 2O 3:Eu 3+ phosphors by surface di...