columanar structure的用法和樣例：
例句
- The microscopic analysis results indicate that deposited metal is hypereutectic structure.
測試結果表明熔敷金屬為過(guò)共晶組織。 - Within a thin disk, the spiral arms exhibit a pinwheel structure.
在單薄的圓盤(pán)體上，螺旋臂呈現出一個(gè)風(fēng)車(chē)狀結構。 - Most grass embryos have a flap-like structure known as the epiblast.
大多數禾本科胚有一片瓣狀結構通常稱(chēng)為外胚葉。
