对流层上层西风急流
Subtropical upper-tropospheric westerly jet
1998年冬季南海上层环流
SCS upper-layer circulation in the winter of 1998
层上同调
cohomology with ceofficients in a sheaf
船中上层建筑
bridge-deck superstructure
大气的最上层
uppermost levels of the atmosphere
地球大气上层地冕
corona of the terrestrial atmosphere
第二代上木
Second class standard
Standard of the second rotation
第三代上木
Third class standard
Standard of the third rotation
第四代上木
Standard of the fourth rotation
Veteran
第一代上木
Teller
Standard of the first rotation
Standard