Inversely proportional to the cross-sectional area of the rod.

棒子的横截面积，成反比。

youdao

That would give me a cross-sectional area of eight times ten to the minus five square meters.

那么横截面就等于,8乘以10的,负五次方平方米。

youdao

So this will be the length of the femur d and this will be the thickness, d A and this will be the cross-sectional area A.

所以这就是股骨的长度,这是它的厚度,这是它的横截面积。

youdao

The piston has a cross-sectional area, a, and the force pressure is force per volume area.

我们以活塞系统为例，来说明膨胀功。

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It's a more powerful method than something called a cross-sectional study, and I'll come back in a later lecture and talk about these in more detail, but a cross-sectional study means you're taking a snapshot of a population of people at one time.

这种方法比所谓的横断面研究更加有效,我将在以后的课中,再仔细讨论这个问题,但横断面研究是指,你一次记录下一群人的状况

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Well, a cross-sectional study would mean that you'd get a random group of the population and measure them in 1970 and then take another random group five years later and measure them, but it wouldn't be the same people necessarily, it would be different groups of people.

那么,横断面研究就是,1970年你在人群中随意选择一组人,并记录下相关数据,然后,五年后再随意选择一组人记录数据,但这不需要是同一组人,通常是不同的人

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In the filaments, the same cross-sectional pattern of holes is preserved, but on a microscopic scale.

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Thinking during tasks shows up in color in cross-sectional images, recorded as the subject lies with his head inside the scanner.

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The cross-sectional study, published by the Indian Journal of Community Medicine three years ago, recruited 200 medical students and scholars.

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