general reduction formula
常見例句
- This paper gives the elastic differential equation of collapse of perforated casing, and a general formula for reduction factor of elastic collapsing by perturbation method.
建立了射孔段套管彈性抗擠性能分析控制一般方程，并采用攝動理論給出了的孔段套管彈性抗擠能力降低系數(shù)一般計算公式。 返回 general reduction formula