stroke bore ratio
科技
stress optical constant
stress optical coefficient
strength of materials
strength of material
streamline of discontinuity
stratification of wind
stratification of atmosphere
straight scarf joint
stored energy function
stone cutting machine
steel belt conveyor
steady state vibration
steady state creep
steady gas flow
standard water column
standard test specimen
standard pitch diameter
standard pitch circle
standard orifice plate
standard linear solid
standard isobaric surfaces
standard frequency spectrum
stand by pump
stand by power
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