送丝速度变化率
variation ratio of wire-feeding speed
速度变化率85ΔVR
speed reduction rate 85(ΔV)R
灰度变化率
variance rate of gay level
横向加速度变化率
lateral change of acceleration
transverse acceleration change rate
固有频率的变化率
Fractional change of the natural frequency
工作成本标志变化率
symbol change rate of work cost
工程成本同步变化率
synchronous change rate of construction cost
耕地相对变化率
Relative change rate of cultivated land
钢筋应变变化率
steel strain variance ratio