谷仓是一个狭长的平行四边形结构，借助周围茂密的树木隐藏自己。

The barn is shaped as a skinny and long parallelogram to elude the dense trees.

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井架采用三节伸缩式结构，底座采用平行四边形结构，能用液缸整体起升。

The structure of the derrick is triple-section telescoping structure, substructure is parallelogram structure, can be lifted by hydraulic cylinder.

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设计了利用KOH溶液定向腐蚀制作出的平行四边形蚀坑串，所形成的锯齿状沟槽结构来固定光纤。

The dentate groove is devised which is composed of a series of the etched parallelogram pits in KOH solution.

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