diameter ratio

基本解释

The trim exponents vary with the fluid viscosity and impeller diameter ratio at same time.
切割指数同时随着切割后的直径比和液体粘度变化而变化。
This makes them incredibly strong and incredibly light, and they've already been manufactured in strands with a length-to-diameter ratio of 132 million to one.
这使得它们非常牢固但又令人难以置信的轻，并且它们已经被用来生产出长度直径比为1.32亿的绳链。
That's pretty common: A single column of tennis balls would have a cylinder-to-sphere diameter ratio close to 1. (Chan's Christmas ornaments were just a touch over the 2.7013 limit.)
这非常普遍：一层网球的圆柱体与球体直径比接近1（陈和奎的圣诞饰品刚过2.7013的上限)。