范围内呈辐射状布置，列数不少于3的压缩机的英文

rad

• 范围:    scope; limits; ext ...
• 内:    inner; inside; wit ...
• 呈:    assume
• 辐射状:    radial; radiation
• 布置:    fix up; arrange; d ...
• 数:    frequently; repeat ...
• 的:    4次方是 The fourth po ...
• 压缩机:    compression engine ...