Results 81 to 90 of about 306,106 (208)
AerospaceIn order to explore the influence of wheel surface structure on the trafficability of planetary rovers on soft ground, three kinds of wheels with different rigid wheel surface structures were selected for research. The basic performance parameters of the
Xinju Dong +6 more
doaj +1 more source
STRUCTURE AND DYNAMICS OF PLANETARY MAGNETOSPHERES
, 2022 The interactions between the ambient plasmas and the objects of the Solar System result in variable exchanges both in time and space of mass, momentum and energy within different types of magnetospheres. The characterization of the sources, the general circulation and the losses of the magnetospheric plasmas as well as the identification of the ...
openaire +1 more source
Jixie chuandong, 2013 The analysis of stress and strain of the improved bulldozer gearbox back planetary carrier is carried out by using ANSYS software,then the stress-strain nephogram is got and the correctness of the structural design is verified.The fractured phenomenon of
张辉, 柯远志, 张庆彬, 张明霞
doaj
On the origin of planets at very wide orbits from the re-capture of free floating planets
, 2012 In recent years several planets have been discovered at wide orbits (>100 AU) around their host stars. Theoretical studies encounter difficulties in explaining their formation and origin.
Adams +24 more
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A Characteristic Planetary Feature in Double-Peaked, High-Magnification Microlensing Events
, 2008 A significant fraction of microlensing planets have been discovered in high-magnification events, and a significant fraction of these events exhibit a double-peak structure at their peak.
B. Scott Gaudi +5 more
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Jixie chuandong, 2012 Aiming at the failure problem of planetary transmission system due to the resonance in the process of actual application,by using 3D modeling software Pro/E a planetary transmission system entity model is established,the modal analysis of planetary ...
陈俊锋, 刘晓辉, 谭长均
doaj
Design of the Gear Generating Instrument on the type of Duplicate Planetary Transmission
Jixie chuandong, 2015 The structure and function of the existing gear generating instrument are analyzed,its drawbacks and deficiencies of the structure and using are pointed out.The traditional structure mode of gear generating instrument is abandoned,and a new type of ...
Ye Youdong, Liu Lihong
doaj
Jixie chuandong, 2015 Wind power gearbox assembly process quality has a decisive influence on the wind power gearbox assembly quality,it has important significance for improving the reliability of wind power gearbox.Aiming at the three assembly process difficulties problems ...
Zou Junwei, Huang Junqiong, You Jing
doaj
New insights into the physical state of gaseous nebulae [PDF]
The impact of knowledge of H II regions, planetary nebulae and supernova remnants due to International Ultraviolet Explorer is examined. The more relevant aspects related to the physical conditions of gaseous nebulae are reviewed.
Peimbert, M.
core +1 more source
The Astrophysical JournalSuper-puffs are a class of low-mass, large-radius planets that have challenged planet formation and evolution models. Their high inferred H/He mass fractions, required to explain their physical sizes, would lead to rapid atmospheric escape, raising ...
Yao Tang +3 more
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