钢制压力容器筒节和标准椭圆形封头的B类焊接接头超声检测方法探讨
강제압력용기통절화표준타원형봉두적B류한접접두초성검측방법탐토
Discussion on Ultrasonic Test of the Class B Welding Joints between Shell Course and Standard Elliptic Heads for Steel Pressure Vessels
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