unit of measurement
科技
unit load method
unit bore system
uniformly distributed load
uniformly accelerated motion
uniform circular motion
unidirectional point source
unidirectional composite material
uniaxial stressed state
underground water flow
ultrasonic vibration cutting
ultrasonic thickness gage
ultrasonic slicing machine
ultrasonic perforating machine
ultrasonic metal forming
ultrasonic flaw detector
ultrasonic electrochemical machining
ultrasonic drilling machine
ultrahigh strength steel
ultrahigh speed machining
ultra high speed
ultimate load design
ultimate bearing capacity
two wheeled trailer
two stroke engine
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