Hydraulic expansion短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 液压胀形 Based on the elasticity-plasticity theory, the stresses and strains of liner and outer pipe were analyzed and the mechanism of hydraulic expansion method was studied theoretically. 推导出了复合管残余接触压力与成形压力之间关系的理论计算公式,通过实验对公式进行了验证。 chemyq