自由－自由吸收系数
free-free absorption coefficient
自由-自由跃迁吸收截面
free-free absorption cross section
自由自觉活动
free and conscious activities
自由自推进法
free self-propulsion method
凹陷圆柱壳
cylindrical shell with initial dent
薄壁圆柱壳
cylindrical thin shells
thin-walled cylindrical shells
cylindrical shells
Thin-walled Cylindrical Shell
thin-wall cylindrical shell
薄圆柱壳复合材料
thin cylindrical shell composite