推挽式是一种有张力拉伸的环状结构。

Push-Pull has a tension loop structure.

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基于建筑原有的柱网，室内呈现出环状的空间结构：中央区域为岛式空间，周边为铁制书架墙体。

Based on the original pole net of the building, the inside turns out to be a ring-like space structure: the central district is island-style space surrounded by iron bookshelf walls.

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手术证实肠旋转不良46例；先天性十二指肠狭窄或闭锁(包括膜式闭锁)24例，环状胰腺15例。

Surgical operation confirmed that 46 cases with malrotation of intestines, 24 with congenital duodenal atresia or stenosis (including membranous stenosis) and 15 with annular pancreas.

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