upper confining bed

upper dental bed

water diversion from the upper Yangtze River in the south to the upper Yellow River in the north

coal bed and gas bed

ebullated bed ebullating bed

ebullated bed reactor ebullating bed reactor

ebullating bed reactor ebullated bed reactor

1221 upper working face

2×2 Upper Triangular Operator Matrixes

95% Upper confidence limit

Aberdeen Upper Reservoir

accepted upper limit

Accommodation above the Upper Deck

accurate upper bound solution

Acquired absence of both upper limbs [any level]

Acquired absence of upper limb above wrist

actual upper bound

Acute bacterial upper respiratory tract infection

Acute lymphadenitis of upper limb