One of the panels had become detached from the main structure.

一块镶板已从主体结构上脱落。

《牛津词典》

First, let's look at the main structure of content.xml for the spreadsheet document (see listing 8).

首先，我们看一下电子表格文档的content . xml的主要结构(见清单8)。

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In addition, the positions of some of the proteins within the structure are approximate and detail is lacking on the amino-acid side chains hanging off the main structure.

另外，结构中的某些在主体结构外的氨基酸侧链上的蛋白质只是近似的和细节缺失的。

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Triadic architecture, developed by the Maya, involved a main structure with two inward-facing buildings on either side.

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The main structure was a three-story building with few windows facing the outside of the compound, and a third-floor terrace had a seven-foot privacy wall, they said.

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Police told local media that the rear of the building had suddenly started to collapse on Wednesday morning, and within a short time the whole structure - except the main pillar and parts of the front wall - had caved-in, triggering panic.

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