中文翻译与英英解释

【航】细度比，径长比〔指流线型飞机机身长度同宽度的比例〕。

fineness:    n. 1.优良，精致。 2.细微，细度。 3.敏锐。 4 ...

ratio:    n. (pl. ratios) 1.比，比率，比值；比例 ...

Fineness ratio is a term used in naval architecture and aerospace engineering to describe the overall shape of a [body. Specifically, it is the ratio of the length of a body to its maximum width; shapes that are "short and fat" have a low fineness ratio, those that are "long and skinny" have high fineness ratios.

例句与用法

The quality of on - building project in the middle route of south - to - north water transfer in hebei province are introduced and it shows that the fineness ratios of main units reach 100 %
摘要介绍河北省南水北调中线工程开工项目建设质量情况，主要单元工程优良率100 % 。