circumferentisl fins

Sound radiation of a submerged periodic ring-stiffened cylindrical shell by space-harmonic analysis;

水下周期环肋圆柱壳声辐射的空间简谐分析

Radiated sound pressure of an infinite periodic ring-stiffened cylindrical shell in fluid field was studied by both theoretical and experimental method.

对流场中一无限长周期环肋圆柱壳受激振动的辐射声压进行了理论和实验研究。

In combination with ribbed rod production experiences and wire-rod mill features,a roll pass design for ribbed rod of 6 mm,8 mm,10 mm,12 mm in diameter was developed.

结合带肋棒材的生产经验和线材轧机的工作特点,对6 mm、8 mm、10 mm和12 mm四种规格带肋盘圆的孔型系统进行了设计,在此基础上制定了合理的轧制工艺制度,同时,采用标准斯太尔摩冷却工艺对轧后产品进行冷却控制。