2×2 Upper Triangular Operator Matrixes

strictly upper triangular matrix

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

1221 upper working face

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

Acute massive hemorrhage of upper gastrointestinal tract

Acute nonvariceal upper gastrointestinal bleeding

Acute upper digestive tract active bleeding

acute upper digestive tract hemorrhage

acute upper gastrointestinal bleeding

acute upper gastrointestinal haemorrhage