I built a test tool to measure the spiral pattern of different species of trees.

我制作了一个测试工具来测量不同种类的树木的螺旋布局模式。

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Sponsored by the National cancer Institute, part of the National Institutes of Health, the NLST establishes low-dose spiral CT as the first validated screening test that reduces lung cancer mortality.

NLST由国家癌症研究所(国家健康研究所的一部分)发起，证实了低剂量螺旋CT成像是第一种可以降低肺癌死亡率的扫描检查。

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The article is a general review of the test and research work on fracture in relation to spiral welded pipes at home and abroad.

文章综述了国内外有关螺旋焊缝管的断裂试验和研究工作的概况。

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When they showed this layout to a third researcher, Manuel Torrilhon of Aachen University in Germany, he recognised the spiral patterns within it, and this prompted the trio to test a design specifically modelled on nature.

ECONOMIST: Solar energy