空塔蒸汽速度
superficial vapor velocity
蒸汽相对进口速度
relative steam entrance velocity
关节相对速度突变
sudden-change of joint relative velocity
相对出口优势指数
opposite export advantage index
相对速度
Relative velocity
relative speed
slip velocity
relatively speed
speed of relative motion {= SRM
relative position
relative rate
Velocity
velocity difference
相对速度分布
relative velocity distribution
相对速度截止
relative velocity cut-off