【摘 要】
：
The Chinese lunar probe Change-4(CE-4) landed in the Von Kármán crater within the South Pole–Aitken(SPA) basin on the far-side of the Moon on 3 January 2019. Following this, the moon rover Yutu-2 sepa
【机 构】
：
NSR“,”National Space Science Center, Chinese Academy of Sciences
【出 处】
：
National Science Review
论文部分内容阅读
The Chinese lunar probe Change-4(CE-4) landed in the Von Kármán crater within the South Pole–Aitken(SPA) basin on the far-side of the Moon on 3 January 2019. Following this, the moon rover Yutu-2 separated from the CE-4 lander and started its travels
其他文献
INTRODUCTION Previous reports have suggested that close to 90％ of cancer biology publications are irreproducible.The low number has recently been corroborated by
What can the brain-computer interface (BCI) do ? Wearing an electroencephalogram (EEG) headcap,you can control the flight of a drone in the laboratory by your t
实践共同体比学习型组织更能促进教师的自主学习。一个优秀的共同体应当是一个有能力促成成员广泛合作的共同体。从构建实践共同体情境学习平台入手,弥补当下教师培训脱离教
目的 探讨黄韧带骨化(ossification ofligamentum flavum,OLF)的临床流行病学特征,评估OLF在普通人群中的发病率、形态和分布特点.进行相关OLF流行病学研究的meta分析.方法 对1736名中国南方人进行脊柱的临床影像学研究,分别进行MRI T2加权的矢状位成像,OLF定义为一椎管后方的低信号区,并在CT上证实.根据OLF累及的节段分为单一型、连续型和非连续型;根
全髋关节置换术(total hip arthroplasty,THA)在临床上应用已有50余年,假体的设计理念也在不断地进步,现有多种设计理念共同存在,以适应不同的患者.对于生物固定型假体,既要有很好的初期稳定性,以维持假体在骨长人之前的稳定,又要确保假体对股骨正常生物力学环境造成最小的破坏,保持生理性的负荷传递方式,使假体有很好的长期稳定性[1-3].
Grimes:Improving observations and forecasts in high mountains are one of WMOs key areas of focus.These objectives are really in line with the mandate of the Thi
These days,the sequencing of genomes and discovery of genomic regions associated with adaptive differences between populations and species are commonplace.What
During the past thousands of years,the expansion of human civilization has changed the surface of Earth.Human activities accelerate the extinction of species,wh
目的 探讨氟化钠(NaF)对体外培养条件下人黄韧带细胞碱性磷酸酶(alkaline phosphatase,ALP)活性及骨钙素(bone gla protein,BGP)合成的影响.方法 依据手术标本来源不同,分为正常黄韧带细胞(NLF)组(取自急性外伤性胸腰椎骨折截瘫患者,7例)、退变黄韧带细胞(DLF)组(取自退变性腰椎管狭窄症患者,9例)及骨化黄韧带细胞(OLF)组(取自胸椎黄韧带骨化患者