球罐极边板纵向对称弦、弧长的设计计算及制造检验

球罐极边板纵向对称弦、弧长的设计计算及制造检验的英文翻译

基本释义

• Calculation of Chord or Arc Length in Longitudinal Center Axle of Pole Edge's Plate, and It's Manufacturing and Checking