如何尺度图像相对于屏幕的尺寸吗？

How to scale image relative to the screen size?

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大量的研究表明，岩土介质的孔隙几何从原子尺度到晶粒尺寸范围内均表现出分形特征。

Research results indicate that the pore geometry of the rock and soil shows the fractal behavior over the range from atom scale to grain size.

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纳米级尺度实物标准是纳米尺寸传递体系中的关键环节，也是评价和校正压电驱动等微扫描微定位装置的重要工具。

Nanometer scale step standards are the keys for dimension transfer, and they are the important tools to evaluate and calibrate micro actuator and micro position devices such as piezoelectric scanner.

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Well, if I go through that, the wavelength of such a photon is going to be so big that I am back to measuring the dimension of the human hair with the yardstick.

好的，如果我做完了这个，那个一光子的的波长将成为,我将回头测量的,用一个尺度测量出人头发的尺寸。

麻省理工公开课 - 固态化学导论课程节选

So, then we'll get to turn to a new kind of mechanics or quantum mechanics, which will in fact be able to describe what's happening on this very, very small size scale -- so on the atomic size scale on the order of nanometers or angstroms, very small particles.

然后我们要讲到一种,新的力学--量子力学,它可以解释,发生在很小尺度,大约是原子尺寸大小,也就是纳米或埃的量级。

麻省理工公开课 - 化学原理课程节选