通过束纤维强力仪、纤维切断器等仪器和手排长度法研究了碱处理时间对亚麻落麻纤维性能的影响。
The influence of alkali treatment time on properties of flax noil fibers was studied through bundle strength tester, fiber cutting machine and manual length method.
TEMs 的工作原理是通过发射一束电子穿过某种物质，并测量它如何吸收和偏转粒子来建立样本的图像。
TEMs work by firing a beam of electrons through the material and measuring how it absorbs and deflects the particles to build up an image of the sample.
你们都知道，拿起一个水晶棱镜，让一束阳光通过它，就会得到一个光谱，看起来就像一条连续的彩虹色带。
You all know how when you take a crystal prism and pass a beam of sunlight through it, you get a spectrum, which looks like a continuous band of rainbow colors.
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