the Upper Carboniferous
Upper Carboniferous Dalaan Stage
Upper Carboniferous Huanglong Formation
upper carboniferous period
Upper Carboniferous-Lower Permian
upper ridge (upper-level ridge)
upper trough (upper-level trough)
upper-air chart (upper-level charty)
water diversion from the upper Yangtze River in the south to the upper Yellow River in the north
input-series output-series
monograph series monographic series
parallel series (multiple-series)
Series Courses of Computer Foundation Courses Series
Y series、Bi series oxide superconductors
1221 upper working face
2×2 Upper Triangular Operator Matrixes