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百科
U-bend
马蹄弯头
马蹄形弯头
U-bend
U-bend die
U-boat
u-bolt
U-bolts
U-bomb
U-boot
U-burst
U-certificate
U-clamp
U-flame furnace
U-form elbow
U-form elbow joint
U-gage
U-gauge
u-groove
U-iron
u-law
U-link
U-MKW mill
U-mode record
u-packing
U-profile
U-shape valley
U-shaped
U-shaped abutment
U-shaped brake
U-shaped burrow
U-shaped enamelling f...
U-shaped magnet
u-spin
U-steel
U-symmetric matrix
U-trap
U-trough scraper conv...
U-tube
U-tube heat exchanger
U-tube manometer
U-turn
U-type furnace
U-vortex
U.
U. S. D.
U. S. P. unit
u.i.
U.K.
U.N.
U.N. observer
U.S.
U.S. attorney-general
U.S. code
U.s. dlr
U.s. dollar
U.S. dollar (US)
U.S. Dollar devaluation
U.s. house panel
U.S. income tax liabi...
U.S. Pharm
U.S. reports
U.S. standard screw t...
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